How to evaluate the quality of ultrapure water machines? With the development of technology, the laboratory has started to purchase many ultrapure water machines, but there are more and more ultrapure water machines on the market. How should we complete the identification of ultrapure water machines? Today, the editor of Seepage Source Pure Water Machine brings you a method to distinguish the quality of laboratory ultrapure water machines.

Firstly, we should identify from the perspective of quality. Currently, there are many types of ultrapure water machines on the market, and the appearance quality of ultrapure water machines is judged by various materials such as carbon steel, fiberglass, and stainless steel.

Secondly, in terms of filter cartridges, a complete laboratory ultrapure water machine has three parts: a complete pre-treatment system, an ultrafiltration system, and a purification system. Among them, the pre-treatment system consists of core consumables such as PP cotton, activated carbon, and reverse osmosis membrane. PP cotton determines the precision and service life of filtration. Generally, high-quality ultrapure water machines use PP cotton that is above 5 microns.

On the other hand, activated carbon is determined by its iodine value. High quality products such as activated carbon with an iodine value of 1000 are usually made by firing coconut shells.

The reverse osmosis membrane is the core consumable of the filter element. We can determine it based on the desalination rate, flux, and oxidation resistance of the membrane, especially in terms of oxygen resistance, which needs to be carefully checked. This is a point that is very easy to overlook, and it is also one of the main factors that cause oxidation, surface rupture, perforation, and decrease in desalination rate of the reverse osmosis membrane in the later stage.

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