ANHUI USTC Zonkia Scientific Instruments Co.,LTD

TYPES OF CENTRIFUGE MACHINES AND REFRIGERATED CENTRIFUGE PRINCIPLE(2022年08月04日)

zonkiamedical — 2022-08-01T10:03:01+0900

https://www.zonkia-medical.com/classification-and-principles-of-centrifuge-machine.html

TYPES OF CENTRIFUGE MACHINE AND REFRIGERATED CENTRIFUGE PRINCIPLE
Refrigerated Centrifuge Principle how centrifuge machine works? According to the sedimentation factor, mass, density, ect. of each group, it will separate the liquid and solid particles or one kind of liquid and the other kind of liquid in the sample mixture by centrifugal force.

A centrifuge machine usually has a high-speed rotating cylinder, called a bowl, about its own axis, usually driven by an electric motor. After the suspension (or emulsion) is added to the drum, it is rapidly driven to rotate at the same speed as the drum, and the components are separated and discharged separately under the action of centrifugal force. In general, the higher the drum speed, the better the separation effect.

Types of Centrifuge Machines
The centrifuge machine is the common separation instrument in the laboratory, which can be classified into low-speed centrifuge, high-speed centrifuge, ultra-speed centrifuge, etc. according to the speed.

Normal speed centrifuge: Rotating speed is less than 3500r/min.

High-speed centrifuge: Rotating speed is between 3500 r/min ~ 50000 r/min.

Ultra-speed centrifuge: Rotating speed is greater than 50000 r/min.

According to temperature, it can be divided into refrigerated centrifuge and normal temperature centrifuge;

According to the capacity, it can be divided into micro-capacity centrifuge, large-capacity capacity centrifuge and ultra-large capacity centrifuge;

According to its appearance, it can be divided into tabletop centrifuges and floor-type centrifuges.

Guidelines for How to Use Centrifuge Machine
Safety is the first consideration when considering how to operate centrifuge machines, uncontrollable centrifugal force can cause great damage. Therefore, pay attention to whether the centrifuge machine tube is balanced, whether the rotating speed exceeds the setting, whether the rotor is corroded, etc. The centrifuge machine seems to be simple to use and requires no technology, but the correct use and maintenance are still necessary. Once a failure occurs, it will cause delays in the experiment, which is a bad bargain.

When the centrifuge machine is in the pre-cooling state, the lid of it must be closed. After centrifugation, the rotor should be placed upside down on the laboratory bench, and the remaining water in the cavity should be wiped off, in this process, the centrifuge machine lid is open.

When the centrifuge machine is pre-cooled, the rotor cover can be placed on the platform of the centrifuge machine or placed on the laboratory bench, do not put the rotor cover lightly on the rotor without tightening, for once started by mistake, the head cover will fly out, and causing an accident.

After the rotor cover is tightened, be sure to touch the rotor with your fingers and make sure that there is no gap between the rotor cover and the rotor. If there is, do not turn the centrifuge machine on until it is confirmed that there is no gap.

When the centrifuge machine works, staff should stay in the room, once an emergency occurs, the operator cannot turn off the power, but press the STOP button. Before the pre-cooling, fill in the centrifuge machine usage records.

Do not use fake or inferior centrifuge machine tubes, and do not use aging, deformed, or cracked centrifuge machine tubes.

The last one who uses the centrifuge machine must undergo routine safety inspections before leaving on holidays and evenings.

If there is a failure during the usage or the parts are damaged, please contact the centrifuge machine manufacturer in time.

Rules of the Centrifuge Machine Use
Electric centrifuge machines are commonly used in laboratories, which has high rotating speed. Be careful when operating, in particular, it is necessary to prevent the centrifuge machine from moving while working due to imbalance or aging of the test tube pad during the operation, which may cause it to fall from the laboratory bench. Or accidents occur as the lid is not covered, and the centrifuge machine tube is broken due to vibration, then, making the glass shards fly out. Therefore, when using the centrifuge machine, you must pay attention to the following centrifuge machine use rules.

Cotton or test tube pads should be placed at the bottom of the centrifuge casing.

If there is a noise the electric centrifuge machine made or it vibrates, cut off the power immediately, and troubleshoot it instantly.

The centrifuge machine tube must be symmetrically placed in the casing to prevent vibration of the machine body. If there is only one sample tube, a tube with water of equal weight should be placed.

When starting the centrifuge machine, the top cover of the centrifuge machine should be covered, then, make sure it starts slowly.

After the separation, turn off the centrifuge machine firstly, after the centrifuge machine stops rotating, you can open the centrifuge machine cover and take out the sample. Remember, do not use external force to make it stop moving.

The centrifugation time is generally 1 to 2 minutes, during the process, operators shall not leave, or do other things.

Zonkia has rich experience in manufacturing science laboratory equipment, mainly including centrifuge. The centrifuges Zonkia supplies have various sizes and rotation speeds, which can meet your different requirements. You may find high quality of low-speed centrifuge, high-speed centrifuge, low-speed refrigerated centrifuge, high-speed refrigerated centrifuge, micro-hematocrit centrifuge, and cell washer centrifuge at Zonkia at reasonable prices.

HIGH SPEED REFRIGERATED CENTRIFUGE HC-2518HR(2022年08月03日)

zonkiamedical — 2022-08-01T10:02:24+0900

https://www.zonkia-medical.com/products/high-speed-refrigerated-centrifuge-hc-2518hr.html

Description of High Speed Refrigerated Centrifuge HC-2518HR

High Speed Centrifuge 14000 rpm features with table type, and is diven by AC frequency conversion motor. The high speed centrifuge 14000 rpm has a microcomputer to control the rotation speed and centrifuging time controller. Its maximum speed can be up to 18,000 rpm, and maximum relative centrifuge up to 23545*g. Zonkia is a profession medical centrifuge manufacturer, we have different types of centrifuge machines for sale, welcome to click here to see more centrifuge machines.

Specs of High Speed Refrigerated Centrifuge 14000 rpm HC-2518HR
Microcomputer control, LCD liquid crystal display(LCD)

Imported refrigerating compressor, high refrigeration efficiency.

AC frequency conversion motor drive, quiet operation clean.

Offers nine ascending and descending rate selection mode, Offer ten kinds of

working mode selection, can free programming call.

Speed/centrifugal force can be set and double synchronous display screen

Full steel structure, Stainless steel centrifugal cavity

Two optional timing mode: run start timing and timing starts to set speed, easyto switch.

Door with double lock rod design, magnetic locks, electric door, more safety and reliable operation

Can change at any time in the operation of the parameters without downtime

Automatic balance without balancing

Automatic identification of rotor

Turned to use memory function, turned to the service life of the machine will alarm prompt, prevent the security hidden danger.

Technical Data of High Speed Refrigerated Centrifuge 14000 rpm HC-2518HR
ItemsHC-2518R
Max speed18000rpm
Max Rcf23486× g
Speed accuracy±100rpm
Temperature-20°C~ +40°C
range
Temperature±2°C
accuracy
Noise≤55dB
Timer range1min~99:99:59 (hh:mm:ss)
ConstructionAll-steel construction
Stainless steel centrifugal chamber
Power supplyAC 220V 50HZ
Power1100
Weight75kg
Dimensions (LxWxH)mm540*520*430

ModelRotor capacityMax speedMax RCF
H240.224×0.2ml18000rpm18824× g
H120.512*0.5ml18000rpm16300× g
H240.524*0.5ml18000rpm23846× g
H120212×1.5ml/2.2ml18000rpm23198× g
H240224×1.5ml/2.2ml14000rpm17465× g
H120512*5ml16000rpm17459× g
H120712*7ml14000rpm16327× g
H121012*10ml12000rpm13363× g
H320.232*0.2ml14000rpm13367× g

If you want to know more types of medical instrument, please visit our website.

AUTOCLAVE(2022年08月02日)

zonkiamedical — 2022-08-01T10:01:37+0900

https://www.zonkia-medical.com/products/autoclave/

AUTOCLAVE
Autoclave machine is suitable for medical and health services, scientific research, agricultural and other units, including medical equipment, dressings, glassware, solution culture medium for sterilization. Zonkia autoclave machine for sale is made with full SUS 304 stainless steel, with PID Microcomputer Control heating, air release, temperature, time, and steam release. As a medical laboratory equipment supplier, we have 18L/24L/30L autoclave machine for your choice.

Different Types of Autoclave Machine For Sale

Autoclave Products List

Portable Autoclave
YX-280A Portable Autoclave
YX-280B Portable Autoclave
YX-280D Portable Autoclave
YX-280 Digital Portable Autoclave
Portable Autoclave
Full SUS 304 stainless steel structure; Accurate dual scale indicate pressure gauge; Double safety valve in the lid; Easy to operation, safety and reliable.

Vertical Autoclave
LX-B Vertical Autoclave
LX-B Digital Vertical Autoclave
LX-B Digital & Hand Wheel
Vertical Autoclave

Full SUS 304 stainless steel structure; Accurate dual scale indicate pressure gauge; Silicone seal ensuring no steam leakage; Water shortage and over heating protection.

WX Horizontal Autoclave
Full SUS 304 stainless steel structure; The door can be automaticly and quickly opened, safety interlock system; LCD dynamic display temperature and time; Error analysis, fault warning display system; Automatic overpressure release and power-off protection, safety ensuring at all time.

Tabletop Autoclave Class B
High quality SUS304 stainless steel material; Microcomputer control system; LCD dynamic touch screen display temperature and time; Automatic release when over-pressure, water shortage and over heating protection.

How to Operate an Autoclave Machine Safely
Here Are Some Autoclave Tips About How to Use Autoclave Machine Safely

Firstly, Sterilized items should be placed reasonably. Then, pay attention to the capacity of autoclaves, whether it is a medical autoclave machine of 200L or an autoclave 300L The contents of the stainless steam autoclave should not be overcrowded, which will affect the sterilization effect of the HPHV steam sterilizer.

Secondly, the most important thing is to exhaust the air in the HPHV autoclave. If there is air in the HPHV autoclave, the sterilization effect will be greatly reduced.

Thirdly, check whether the liquid level of the water tank is between the baseline and the top line, if it is lower than the baseline, make it up, and pour out the part if it is higher than the top line.

How to Use Autoclave Machine?
The HPHV steam sterilizer system must include the main engine, supporting water inlet device, and installation.

The autoclave machine size must be greater than 18L.

The autoclave temperature for sterilization must be higher than 133 degrees Celsius, and the sterilization time must be longer than or equal to one hour.

The autoclave sterilization process must be fully automated, with a safe opening temperature and pressure auto-induction interlocking device, over-temperature protection.

The automatic autoclave machine should equip with a one-button automatic door opening structure, with dual protection of mechanical self-locking and electronic interlocking.

How to Use Autoclave Machine Step by Step?
Add water into the outer pan, place the items that need to be sterilized in the inner pot, cover the pot and twist the spiral symmetrically.

Heat the autoclave to produce steam.

According to the characteristics of the sterilized items, maintain the required pressure for a certain period of time.

Autoclave Machine Uses
Autoclave machine is used for aerospace, beauty salon, food processing, carbon fiber, dental clinic, glass lamination, microbiology lab, mushroom cultivation, piercing, medical waste treatment, and so on.

Autoclave Questions & Answers
What is Autoclave Machine and Autoclave Working Principle?

An autoclave machine, also known as an HPHV steam sterilizer, is a laboratory or production machine specially designed to generate high-temperature steam under pressure. Although there are many industrial uses for autoclave machines, they are most commonly used in clinics and laboratories as sterilizing equipment. Autoclave machines can be divided into the portable autoclave and vertical autoclaves.

how an autoclave works？It uses an electric wire to heat water to produce steam and maintain a certain pressure. High-pressure steam always has good latent heat and penetration, which means it can coagulate and denature the bacterial protein and cause the microorganism to die. The steam pressure of the medical autoclave for sale is generally adjusted to 1.0~1.1kg/cm2, and the sterilization effect can be achieved by maintaining it for 20~30min.

Here in Zonkia, we can offer various types of autoclaves, including portable autoclave machine, vertical autoclave machine, horizontal steam sterilizer, table top autoclave steam sterilizer, etc.

how long does autoclave take to sterize?

The most commonly used sterilization method is generally steamed for 15 to 20 minutes, which can achieve the purpose of sterilizing items. All items that are resistant to high temperature and humidity, such as common culture medium, physiological saline, clothing, gauze, glass equipment, etc., can be sterilized by this method.

what kinds of materials are sterilized in the autoclave machine？

For autoclavable materials, it is critical to ensure that the items you will be processing are compatible with the high pressure, high-temperature environment created in the autoclave chamber. Here, Zonkia offers a list of autoclavable materials:

Stainless steel

Metal medical tools, surgical instruments

Contaminated solid items

Plastic pipette tips (within appropriate biohazard)

Polypropylene (PP secondary container) and Polycarbonate (PC) plastic (keep containers and bags open so steam can penetrate them)

Biological tissue culture flasks and plates

Media Solutions

Glassware (Pyrex, Pyrex-type material, or Type I borosilicate glass)

Paper (if placed in a biohazardous autoclave trash bag)

Stainless steel

Latex gloves, vinyl (in biohazard autoclave trash bags)

Hospital linen, textile materials

ZONKIA SCIENTIFIC INSTRUMENT(2022年08月01日)

zonkiamedical — 2022-08-01T10:00:55+0900

https://www.zonkia-medical.com/products/
Founded in 1978, ZONKIA provides mass spectrometer consumables laboratory equipment parts, filament wire, electron multipliers, capillary columns, and vacuum system components at reasonable prices. As a medical laboratory equipment supplier, we have grown to be a recognized leader in manufacturing assembles, supplies, and services for the scientific and medical communities worldwide. The innovation and dedication to quality that built our early following of loyal customers are still evident in the science instruments we make and sell, even as we expand to meet the needs of new analytical techniques.

Centrifuge, Autoclave & Solar Products
Portable Autoclave
Vertical Autoclave
WX Horizontal Autoclave
Tabletop Autoclave Class B
Autoclave
The Autoclave is divided into several types, such as the high Pressure Portable Autoclave, the Electric Coal and Gas Heating Portable Autoclave, the Portable Steam Autoclave, the Vertical Autoclave, the hand wheel & digital vertical autoclave and the table Autoclave. The temperature have 115℃~ 129℃ and 100℃-134℃.

Centrifuge
Low Speed Centrifuge
Low Speed Refrigerated Centrifuge
High Speed Centrifuge
High Speed Refrigerated Centrifuge
Micro-Hematocrit Centrifuge
Centrifuge
The centrifuge has low speed centrifuge, high speed centrifuge, low speed refrigerated centrifuge ,high speed refrigerated centrifuge, Hematocrit Centrifuge and Serofuge Centrifuge (cell washer). With table type and floor type.

Solar Freezer/Air Condition
Solar Chest Freezer
Solar Refrigerator
Solar Ice Cream Tricycle
Solar Powered Air Conditioner
Solar Freezer/Air Condition
We supply solar chest freezer, solar upright fridge, solar display cooler, solar ice marker, solar air condition and solar ice cream tricycle. Optional for solar panel, battery, controller and adapter.

Find More Scientific Instrument in Zonkia
Medical Freezer & Refrigerator
Ultra Low Vertical Freezers
Ultra Low Chest Freezers (-10 °C To -86°C)
Portable/ Vehicle Refrigerator
Medical Freezer & Refrigerator

QV-500 Vein Finder
Blood Platelet Incubator
Platelet Incubator MDC-10/MDC-5
Blood Platelet Incubator

What Are Scientific Instruments In Medical Lab/Field
Today's medical and clinical labs are performing more and more sophisticated tasks, specifically due to the advent of new diagnostic tests and technologies. Not only has the amount of tests increased but the complexity has increased as well. Therefore, medical science instrument plays an increasingly critical part in the functioning of a medical facility. Medical laboratory technicians require various types of specialized scientific instruments to test a wide variety of hematological, pathological, oncological, microscopic, and immunologic tests. The accuracy of medical diagnostic results mainly depends on the kind of science laboratory equipment used to carry out the analysis. All medical science laboratory equipment must be consistent, accurate, and reliable in order to achieve the highest quality. Scientific instruments that work well and are durable allow clinical facilities to complete diverse research within the specified time limit and to deliver accurate evaluation reports.

As a leading medical science laboratory equipment supplier, Zonkia supplies all your laboratory and medical science instruments needs, from hospital equipment to clinical lab equipment, and supplies instruments at competitive prices to meet the analytical and diagnostic requirements of clinical facilities. Zonkia’s medical science laboratory equipment is designed for use in clinical laboratories, research institutes, and advanced areas of education. High quality, attractive, sturdy, and easy to use. The majority of our products comply with internationally recognized standards such as CE Marking and FDA approval.

If you want to know more about scientific instruments and their uses and scientific instruments list and their uses pdf, please visit our website.

LEARN ABOUT THE AUTOCLAVE AND ITS DEVELOPMENT TREND(2021年11月24日)

zonkiamedical — 2021-11-17T12:06:59+0900

https://www.zonkia-medical.com/learn-about-the-autoclave-and-its-development-trend.html

The autoclave is a typical innovation of magnetic transmission equipment applied to large-scale reaction equipment. It fundamentally solves the problem of shaft seal leakage that cannot be overcome by the previous packing and mechanical sealing, and there is no leakage and pollution. The autoclave is currently the ideal equipment for chemical reactions under high temperature and high pressure, especially for chemical reactions of flammable, explosive, and toxic media, which shows its superiority.

1. Learn about the high pressure autoclave

The core part of the autoclave is a (ring-shaped) strong magnetic coupling, sealing, and stirring device. A plurality of magnetic steel rings are made into two powerful permanent magnets inside and outside; the inner magnetic steel body is sealed in a sealed cylinder made of stainless steel to connect the stirring part. The sealing cylinder and the kettle cover, the kettle body, and the fastening connection form a static sealing cavity, so that the reaction medium is completely in a static sealing state, without any leakage, pollution and personal danger. The speed-regulating motor of the autoclave drives the outer magnetic steel body, and the strong magnetic force passes through the sealed cylinder made of stainless steel without contact, and the strong magnetic force of the inner magnetic steel body enclosed in the sealed cylinder attracts each other and positions itself. On the axial rotation traction, high temperature and high pressure stirring reaction is carried out.

The high pressure autoclave has the characteristics of static sealing, no leakage, no noise, no pollution, stable operation, simple operation, sturdiness and durability, and compact structure. Therefore, under high temperature, high pressure, high vacuum, high speed, suspension, and convection, the reaction medium can be completely sealed in a static state, and it can safely react with flammable, explosive, highly toxic, hydrogen and other harsh media.

2. The development trend of the high pressure autoclave

The cumbersome gap manual operation can no longer meet the increasing level of chemical production. Production automation and continuity have become an indispensable new favorite of chemical production. The process control adopted by the autoclave can not only ensure the stability of production, improve product quality, increase profit, but also eliminate environmental pollution. In order to increase output, reduce quality errors between mass production, and reduce product costs, large volume has gradually become an effective way and development trend for chemical production. For autoclave suppliers, in order to make rational use of heat energy, the application of heat pipe technology in chemical production should be improved.

The autoclave strengthens heat preservation measures, improves the heat transfer efficiency, minimizes heat loss, and fully utilizes the waste heat or the heat generated after the reaction. The autoclave will be the future development direction. The autoclave with a single stirrer can no longer meet the requirements of chemical production, and the use of double stirrers or additional pumps for forced circulation has become a future development trend.

Zonkia is a professional lab instrument manufacturer, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

AUTOCLAVE MACHINE USED IN HOSPITAL(2021年11月23日)

zonkiamedical — 2021-11-17T12:06:27+0900

https://www.zonkia-medical.com/autoclave-machine-used-in-hospital.html

1. The autoclave machine is used in hospitals

Most consumables found and used in the emergency room, delivery room, and especially in the operating room need to be sterile. The sterile environment begins with sterile supplies. Sterile supplies ensure that patients will not be infected whether in minor procedures or in major procedures. The main process of autoclave sterilization starts with the use of steam. This steam is then responsible for killing viruses, bacteria, spores and other microorganisms. When these instruments are placed in an autoclave, the heat in the steam is expected to be higher than the boiling point. Compared with the use of an open flame, the autoclave has proven to be an effective method to eliminate bacteria without spending too much time and space.

2. Different sizes of the autoclave machine used in hospitals

The size of the autoclave machine may vary. And the types of autoclave machine are various. Some may be as small as a pressure cooker, while others look like a microwave oven. For smaller surgical equipment, a smaller size autoclave will work because it can still hold enough equipment to sterilize all the equipment at once. On the other hand, the size of the horizontal autoclave is significantly larger than the desktop type. These horizontal models can accommodate larger and more equipment at the same time. If the department needs small but multiple autoclaves, stack some together.

In most hospitals, autoclaves may come in various sizes, depending on the department they are in and their use. In laboratories, desktop sterilizers are usually used. But in operating rooms that require larger surgical supplies, you can find horizontal types, or sometimes stack them together to save space. There is no absolute right or wrong in the choice of autoclave, everything should depend on the needs of the hospital or department.

Zonkia is a professional laboratory equipment manufacturers, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

PRECAUTIONS FOR USING THE AUTOCLAVE MACHINE(2021年11月22日)

zonkiamedical — 2021-11-17T12:05:50+0900

https://www.zonkia-medical.com/precautions-for-using-the-autoclave-machine.html

Ⅰ. Learn about the autoclave machine

The autoclave is a kind of equipment that uses high pressure and steam for sterilization and disinfection. It is widely used in medical, scientific research, catering, agriculture, biology and other industries. The autoclave is equipped with an electric lock system, which makes it easier to safely open the lid when touching the controller. The application of the safety two-way detection interlock device greatly ensures the safety of the equipment. In recent years, the design and application of high-pressure sterilizers have been greatly improved, so they are also welcomed by enterprises. The autoclave is mainly used in medical and health undertakings, national scientific research, biology, agriculture and other units to disinfect and sterilize medical equipment, dressings, glassware, solution cultures, etc.

Ⅱ. Precautions for using the autoclave machine

1. Preliminary treatment of disinfected items. As long as it is medical equipment, sheets and clothing that have been exposed to pathogenic microorganisms, they need to be disinfected with chemical disinfectants. Then clean them in accordance with conventional methods, especially the various items used in some infectious wards, to avoid re-contamination;

2. Use suitable packaging and containers for disinfected items, generally white cotton double-layer cloth bags. You should not use the item packaging after washing, and do not use the string to tie it too loose or too tight. When using a container for storage, choose a container that can block the intrusion of external microorganisms and has better steam penetration. In this way, the effect of disinfection and sterilization in the process of using the autoclave digital will be better;

3. In the process of using the autoclave, the air must be removed cleanly. If there is air in the pot, the pressure pointed by the air pressure needle is not the pressure generated by saturated steam, which will affect the sterilization effect of the autoclave, especially for the table top autoclave sterilizer;

4. Calculate the sterilization time strictly and reasonably. Sterilization time generally includes penetration time, maintenance time, and safety time. According to these three points, the user can operate according to the actual situation during use.

Zonkia is a professional laboratory equipment manufacturers, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

COMMON FAILURES AND MAINTENANCE OF LABORATORY STERILIZERS(2021年11月21日)

zonkiamedical — 2021-11-17T12:05:12+0900

https://www.zonkia-medical.com/common-failures-and-maintenance-of-laboratory-sterilizers.html

Ⅰ. Functions of laboratory sterilizers

Autoclave steam sterilizer is a device that uses saturated pressure steam to quickly and reliably disinfect and sterilize items. It is suitable for medical, scientific and agriculture usage, etc.

According to different styles and sizes, autoclave steam sterilizers are classified into portable autoclave steam sterilizer, vertical pressure steam sterilizer, horizontal pressure steam sterilizer, etc. It can sterilize medical equipment, dressings, glassware, solution culture medium, etc.

The autoclave steam sterilizer is composed of a sterilization room, a control system, a protection system (water level protection, temperature control protection, etc.), a heating system, etc. The use of high-temperature saturated water vapor can denature the protein of microorganisms and cause the death of microorganisms within a certain period of time so as to sterilize moisture-resistant and heat-resistant articles.

Ⅱ. Common failures and maintenance of laboratory sterilizers

1. Circuit: the heating system failed.

① Check whether the power supply of the heating system is normal. There will be a wiring failure of the main control machine, you need to reconnect it.

② Pay attention to whether the laboratory sterilizers trigger protection without heating; the temperature control instrument is invalid.

③ If the fuse wire is damaged or the water level sensor fails, the protection will be triggered without heating; the heating rod itself is damaged, etc.

2. The pressure cooker is heating normally without temperature display: the temperature sensor may be damaged.

3. The sterilization effect of the laboratory sterilizer is unqualified:

① Pay attention to the cleaning of the steam filter and the interlayer water needs to be removed in time.

② If the safety valve and exhaust valve leak, replace them in time.

Zonkia is a professional laboratory equipment manufacturers, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

ANALYSIS ON THE IMPORTANCE OF TEMPERATURE COMPENSATION AND ROTOR OF HIGH SPEED REFRIGERATED CENTRIFUGE(2021年11月20日)

zonkiamedical — 2021-11-17T12:04:07+0900

https://www.zonkia-medical.com/analysis-on-the-importance-of-temperature-compensation-and-rotor-of-high-speed-refrigerated-centrifuge.html

1. High speed refrigerated centrifuge in the development stage is designed to temperature compensation mode

In its development stage, high speed refrigerated centrifuge made a strict measurement for the different conditions of the centrifuge chamber inside and the temperature difference between the inside of the centrifugal chanmber and the sample, and design a special temperature compensation model according to the test results, together with the sensor built in the centrifuge's central software system.

The centrifugation method, centrifugation medium and density gradient affect the separation effect of the centrifuge, while in addition, the temperature & PH of the centrifugation medium, centrifugation speed & force, and centrifugation time are also crucial for the centrifugation effect. For biological samples, in order to prevent coagulation, denaturation and deactivation of the material to be separated, in addition to attention in the selection of centrifugation media, centrifugation conditions such as temperature and pH of the media solution must be controlled.

Due to the high speed or high speed centrifugation, the rotor will heat up at high speed, which will cause the temperature to rise and lead to sample loss. Therefore, a refrigeration system must be used to stabilize the temperature within a certain range.

The high speed refrigerated centrifuge has powerful refrigeration systems and temperature compensation to provide accuracy and reliable, high-quality results.

2. The centrifuge rotor is also an important influencing factor

The rotor is an important part of the centrifuge, and the types of rotors include angular rotor, horizontal rotor and continuous flow rotor.

Centrifuge in the design and manufacture of the rotor processing errors brought about by the imbalance, has been made to remedy the dynamic balance test, but all centrifuges have their allowable loading sample imbalance. At this larger value, the centrifuge can run, but the unbalance force generated at this time to n times per minute frequency of violent impact on the bearings and bracket, the centrifuge is subject to damage. Therefore, users of those expensive centrifuges try to find a good balance after centrifugation which can extend the service life of the centrifuge.

Angle rotor centrifugal has small radius and high speed, and its capacity is small compared to the horizontal rotor, suitable for the separation and extraction of fine particles; horizontal rotor is suitable for the separation and extraction of large particles, relative to the angle rotor speed is low, but the capacity is relatively large; continuous flow rotor can achieve quantification and continuous production, but not suitable when the solid content is large, because loading and unloading continuous flow rotor and taking sediment is more troublesome, takes longer, requires experienced operators. It also requires a certain arm strength, and is not recommended if the solids content exceeds 10%.

Zonkia is a professional laboratory equipment manufacturers, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

HIGH SPEED CENTRIFUGE DYNAMIC INFLUENCE COEFFICIENT AND CENTRIFUGAL FORCE FIELD(2021年11月19日)

zonkiamedical — 2021-11-17T12:03:36+0900

https://www.zonkia-medical.com/high-speed-centrifuge-dynamic-influence-coefficient-and-centrifugal-force-field.html

Centrifuge with its adaptability and fast speed, is active in a variety of laboratories. With the market demand growing, centrifuge manufacturers also derived on its basis, integrating vacuum, high speed and cooling in one, can be used for a large number of cells, subcellular organelles, bacteria and viruses rapid separation of high speed centrifuge, so as to complete a variety of nucleic acids, proteins, cells and nanomaterials separation work, can meet the animal science, food science. It can meet the experimental needs of animal science, food science, life science and other related professional experimenters.

1. A high speed centrifuge impact coefficient method

The advantage of high speed centrifuge dynamic balancing with the influence coefficient method is that the dynamic balancing problem is finally transformed into the solution of a linear system of equations, which is a very simple method and very convenient for computer numerical calculation. As the stiffness of the shaft system of the centrifuge with air bearing is very high and quasi-rigid, through the testing of the vibration response of the shaft system, the vibration response measured by the micrometer on the upper and lower test surfaces of the high speed centrifuge is linearly related to the amount of unbalance on the upper and lower calibration surfaces, and the relationship coefficient between them is the so-called influence coefficient. The influence coefficient method is to measure the vibration response by attaching a definite excitation to the dynamic balancing system, i.e., the additional unevenness measure, and to identify the influence coefficient of the dynamic balancing system according to the relationship between them, and to calculate the original unevenness measure according to the influence coefficient.

2. The centrifugal force field of high speed centrifuge

High speed centrifuge centrifugal technology is established and developed based on the behavior of tiny particles in the centrifugal force field. The centrifuge rotor is able to move in a circle with a steady angular velocity, thus generating a strong centrifugal force field radiating outward, which imparts a centrifugal acceleration to any object in it. It imparts a centrifugal acceleration to any object in it, subjecting it to an outward centrifugal force. The centrifugal force field G generated by a centrifuge can be calculated by the following formula

G = ω2r ω - angular velocity of the rotor r - radius of rotation (the distance between the position of the mass of matter and the center of rotation)

The centrifugal force field of a high speed centrifuge is often expressed by the Relative Centrifugal Force (RCF). The magnitude of the relative centrifugal force is expressed as a multiple equal to the gravitational force (acceleration of gravity, g), i.e.

RCF=ω2r/g×g=(2πn)2r/602g×g=1.119×10-5×n2r×g

N - rotor speed rpm/min. g - acceleration of gravity 980.6 cm/s

Zonkia is a professional lab instrument manufacturer, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

MEDICAL CENTRIFUGES REGULARLY SCHEDULED MAINTENANCE SHOULD NOT BE IGNORED(2021年11月18日)

zonkiamedical — 2021-11-17T12:03:10+0900

https://www.zonkia-medical.com/medical-centrifuges-regularly-scheduled-maintenance-should-not-be-ignored.html

Hospitals have medical centrifuges as long as they are involved in laboratory testing departments. The hospital needs to test a lot of patients every day, so the workload of the centrifuge is quite large, so for the medical centrifuge motor wear and tear is also very strong.

Considering the frequent use of medical centrifuges, we should pay attention to the regular maintenance and repair work on time. This step is mainly for prevention.

1. Why should a regularly serviced medical centrifuge?

1) To prevent downtime or slow speed failure.

2) To prevent accidents.

When the medical centrifuge does not stop or slow speed failure, first of all, we need to exclude the power supply part failure. Such as power cord break off, plugs, sockets, poor contact, bearing damage or stator, rotor coil short-circuit or broken and burned. The second is due to the brush open circuit, that is, the rotor rectifier and brush do not coincide with each other, poor contact caused by.

2. How to ensure the safety of high-speed centrifuges?

The medical centrifuge in use should to be placed on a stable, solid countertop, its base are equipped with rubber suction feet, with the help of atmospheric pressure and the weight of the instrument itself, close to the countertop can be; large-capacity low-speed centrifuge and high-speed freezing centrifuge to be placed accordingly on solid ground, placed horizontally. Ultracentrifuges weighing hundreds of kilograms should be placed on a very solid ground and have dustproof and moisture-proof equipment to ensure that the centrifuge chamber reaches a certain vacuum level and operates normally. Centrifuge before work, the load should be balanced, the smaller the weight error the better, otherwise it will cause violent vibration, damage to the centrifugal head and shaft.

Also note that the tensile strength and elongation of various centrifuge tubes for medical centrifuges are different and should be selected as needed. Centrifuge tubes can be made of many different materials, such as polyethylene, cellulose, polycarbonate, polypropylene, etc. Care should be taken when using to ensure that samples, solvents and gradient materials do not corrode the centrifuge tube and cap assembly. Centrifuge tubes that are outdated, aged, cracked or corroded should not be used or used at reduced speeds. Control the number of times plastic centrifuge tubes are used and pay attention to the specifications. Do not open the centrifuge chamber cover during the centrifugation process, and do not hit the rotating head and tubes with your hands or foreign objects.

Zonkia is a professional biology lab equipment suppliers, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

BLOOD SEPARATION AND PURIFICATION BY LOW SPEED CENTRIFUGE(2021年11月17日)

zonkiamedical — 2021-11-17T12:02:39+0900

https://www.zonkia-medical.com/products/low-speed-centrifuge/

1. Low speed centrifuge in the pharmaceutical industry

Low speed centrifuge speed is less than 10,000 rpm, the common application industries are textiles, chemicals, environmental protection, etc.

But in recent years, lowspeed centrifuges are rapidly becoming popular in the pharmaceutical industry. Many pharmaceutical companies, the need to carry out the separation of mother liquor, when the lowspeed centrifuge has become the key.

At the same time, because of the strict norms of the pharmaceutical enterprise industry, pharmaceutical centrifuges basically use the flat closed type, in order to reduce possible pollution or damage or improve hygiene, and material contact part of the use of stainless steel materials or the whole use of stainless steel materials, the whole machine without hygiene dead ends, clean and good, this type of centrifuge has basically spread throughout the pharmaceutical industry.

In addition, there are blood stations, or hospital blood testing department, are using about 3000 rpm lowspeed centrifuge to separate blood.

Many patients go to the hospital doctors will draw blood, and then use the vacuum blood collection tubes, to the laboratory to do the test, careful people will find that most doctors will put the vacuum blood collection tubes into the centrifuge for centrifugation, the following is the process of the hospital laboratory use of centrifuges.

First, after the doctor gets the blood collection tube with blood, it will be put on the vacuum blood collection tube rack, and when a certain amount will be put into the centrifuge for centrifugation. Must be even number, because a test tube is not centrifuged, centrifuge in the process of centrifugation need to balance, although some centrifuges are automatically balanced, but it is not possible to say that a test tube can be centrifuged, but relatively in the weight of the difference is not very large to maintain normal operation. Centrifuge in the centrifugal process of throwing force is very large, and if not balanced, it will lead to accidents. Centrifuges have protection devices and they cannot be operated normally in the case of imbalance.

2. Additional notes on centrifuges

1) The centrifugation of the specimen to separate the serum should choose the centrifuge relative centrifugal force (RCF) of 1000g ~ 1200g, centrifugation time of 5 ~ 10 minutes. Increase the relative centrifugal force or increase the centrifugal time, are prone to hemolysis.

2) The processing of hemolyzed specimens hemolysis can lead to the release of a variety of components within the RBC, causing interference with the determination method, Hb ≥ 0.2g/L, hemolysis is visible to the naked eye.

3) Indirect interference: The release of Hb can cause indirect interference, because Hb has light absorption at wavelengths of 431nm and 555nm, which can lead to false increase if the measured substance is selected for colorimetric analysis at similar wavelengths. Treatment: mild hemolysis, while making serum blank; severe hemolysis, reretain the sample.

4) Direct interference: After hemolysis of blood chemicals with high content in RBC, the concentration of these chemicals in the serum will be increased, so avoid using hemolysed specimens to determine chemical components with high content in RBC. Such as potassium, ALP, AST, Bil, CK, LD, ACP, etc.

Do general biochemical tests to separate the serum, this is a low speed centrifuge with a speed of about 30005000 rpm. It is usually done within 3 minutes.

Separation of serum is usually centrifuged on the day of blood collection, moderate placement can be put for a day. Hemolysis usually occurs because the pressure is too high when playing from the syringe to the centrifuge tube too fast after blood collection, or the speed of centrifugation is too high. If it is more than 8000rpm, hemolysis will appear easily.

Zonkia is a professional medical laboratory equipment suppliers, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.

BLOOD SEPARATION AND PURIFICATION BY LOW SPEED CENTRIFUGE(2021年11月17日)

zonkiamedical — 2021-11-17T12:01:51+0900

https://www.zonkia-medical.com/blood-separation-and-purification-by-low-speed-centrifuge.html

1. Low speed centrifuge in the pharmaceutical industry

Low speed centrifuge speed is less than 10,000 rpm, the common application industries are textiles, chemicals, environmental protection, etc.

In addition, there are blood stations, or hospital blood testing department, are using about 3000 rpm lowspeed centrifuge to separate blood.

2. Additional notes on centrifuges

Do general biochemical tests to separate the serum, this is a low speed centrifuge with a speed of about 30005000 rpm. It is usually done within 3 minutes.

Zonkia is a professional medical laboratory equipment suppliers, we provide solar powered air conditioner, solar air conditioner for sale and etc. Want to know more? Please contact us.