What impurities can be removed using a compact ultrapure water system?

Compact ultrapure water systems incorporate advanced international water treatment technologies to produce water that meets all usage requirements. The systems are widely used across diverse fields including organic chemistry, microbiology, pharmaceuticals, microelectronics, semiconductors, chromatography, cell culture, protein purification, and biology. For new users who need to get started with the system quickly, it is important to understand the types of water impurities that can be filtered out. We will now explore this in detail.

1. Particulate matter:​includes visible impurities such as sand, rust, algae, and suspended solids. These particles often remain suspended in water, causing visible cloudiness. Being unstable in solution, they can be removed through sedimentation and filtration.

2. Colloidal substances: Colloidal substances are larger than ionic compounds but smaller than particulate matter. Colloidal solutions are aggregates of numerous molecules and ions. Colloidal substances cannot be removed by gravitational settling alone. Their removal typically requires chemical addition to destabilize them, allowing the colloids to settle for removal. Such colloidal substances may be present in both groundwater and surface water.

3. Ionic substances: include cations and anions. Cations are generally soluble in water and can be removed by methods such as ion exchange or desalination.

4. Non-reactive dissolved gases: Non-reactive dissolved gases refer to gases like nitrogen that do not​undergo chemical reactions with water, and thus do not introduce cationic contaminants or affect the water's pH.

5. Reactive dissolved gases: Common reactive gases found in natural water sources include carbon dioxide and oxygen, and sometimes hydrogen sulfide and ammonia. Most of these dissolved gases are corrosive to metals.