年表作成・共有サービス - pastport

https://www.pharmasources.com/products/150l-h-ultrapure-water-system-244753.html
The ultrapure water system is used in the electronic industry that produces semiconductors, photovoltaic solar energy, integrated circuit chips and packages, liquid crystal displays, high-precision circuit boards, optoelectronic devices, and various electronic devices.

Traditional methods of producing pure water cannot produce ultrapure water. In the chemical sense, the theoretical conductivity of pure water (liquid H2O) is 18.25MΩ.cm. Although the pure water produced by people can't reach the theoretical value, it seems that 18 MΩ.cm can be achieved. This kind of water is called ultrapure water. At present, there is no systematic definition and grading boundary. The conductivity index can be used to judge more accurately.

At present, the method of manufacturing ultrapure water is to scientifically combine various new technologies of purified water, so that not only ultrapure water can be produced, but also the production becomes very easy. The ultrapure water purifier on the market at present is a successful example. Tap water goes in and ultrapure water comes out, which is very convenient. Moreover, the service life is getting longer and longer.

The principle and steps of manufacturing ultrapure water by ultrapure water device are as follows:

1. Raw water: tap water, ordinary distilled water, or ordinary deionized water

2. Mechanical filtration: Mechanical impurities, such as rust and other suspended substances, is filtered through sand core filter plates and fiber columns.

3. Activated carbon filtration: Activated carbon is a broad-spectrum adsorbent, which can adsorb gas components, such as residual chlorine in water, bacteria, and some filter metals. Chlorine can damage the reverse osmosis membrane, so it should be eliminated.

4. Reverse osmosis membrane filtration: It can filter out more than 95% of electrolytes and macromolecular compounds, including colloidal particles and viruses. The removal of most ions greatly prolongs the service life of the ion exchange column.

5. Ultraviolet digestion: Short-wave (180nm-254 nm) ultraviolet radiation decomposes small organic compounds in water that are not easily absorbed by activated carbon, such as methanol and ethanol, and converts them into CO2 and water to reduce the TOC index.

6. Ion exchange unit: Mixed ion exchange bed is the decisive means to remove ions from water. It is not difficult to obtain ultrapure water by means of multi-stage mixed beds. However, the TOC index of water mainly comes from the resin beds. Therefore, high-quality ion exchange resin becomes the key to success. The so-called high-quality resin is a resin with excellent chemical stability, no decomposition, and no oligomer, monomer, additive, etc. The so-called "nuclear industry-grade resin" probably belongs to this kind of resin. The requirement for the resin is that the higher the quality, the better. Unfortunately, few people in China have made great efforts in this area, because they pay more attention to the output.

Filter with 7.0.2μm filter membrane to remove the particulate matter in water to 1 particle per milliliter (less than 0.2μm). The water produced after the above steps is ultrapure water. It should meet the various requirements of instrument analysis, high purity analysis, trace analysis, etc., and approach or meet the requirements of electronic grade water.

Find high quality ultrapure water systems, manufacturers and suppliers at pharmasources.com - the largest b2b platform in pharmaceutical industry.

150L/H Ultrapure Water System
Category:Finished Dosage
Product Name:150L/H Ultrapure Water System
Price(USD):Interview
Company:QINGDAO FLOM TECHNOLOGY CO., LTD

Ultrapure water system product page:https://www.pharmasources.com/products/catid/water-purification-equipment-243.html

Here are some events in pharmaceutical industry:

CPhI South East Asia 2021
Time:May 18-20, 2021
Country/Region: Thailand
Venue:Challenger 1, IMPACT, Muang Thong Thani, Thailand
Organizer:Informa Markets

CPhI Middle East & Africa 2021
Time:March 24-25, 2021
Country/Region: United Arab Emirates
Venue:RICEC | Riyadh, Saudi Arabia
Organizer:Informa Markets

More events, you can find here:https://www.pharmasources.com/events