Types Of Pure Water Systems

‌Pure water systems can be divided into the following categories based on their functions and purity requirements:

‌ Class I Ultrapure Water System ‌: This is the purest water and is usually used for precision experiments and analyses that are extremely sensitive to impurities, such as electron microscopy, cell culture, and molecular biology experiments. Ultrapure water is mainly defined by conductivity or resistivity, with a conductivity of 0.055 µS/cm and a resistivity of 18.2 MΩ·cm. During the production of ultrapure water, other impurities such as TOC, endotoxins, enzymes, and particles are removed, which is critical for sensitive analytical applications and life science applications.

‌ Class II Pure Water System ‌: Suitable for general chemical analysis, microbial culture, and other experiments. Its water quality requirements are lower than those of ultrapure water, but it can still meet most routine experimental needs.

‌ Class III RO Reverse Osmosis Pure Water System ‌: Commonly used for basic purposes such as cleaning and preparation in laboratories. Its water quality is between ultrapure water and ordinary water, and is suitable for water supply applications such as utensil washing and autoclaves.