Choose the right water quality according to your application

The level of water used in the laboratory is defined by quality standards such as ASTM or ISO 3696, which helps to select the appropriate water quality for a particular application. These standards also take into account the production cost. For example, the production cost of Type 1 ultra pure water is much higher than that of Type 2 or Type 3 pure water.

Type 1 ultrapure water contains no ions (resistivity 18.2 M Ω• cm) and low total organic carbon (TOC) content. It is recommended to use ultrapure water in sensitive laboratory applications, such as advanced analytical techniques (such as HPLC, UHPLC, LC-MS, ICP-MS, GF-AAS), molecular biology applications (such as PCR sequencing), and the preparation of mammalian cell culture buffers and media.

Type 2 pure water is recommended for general laboratory applications, such as the preparation of buffers, reagents and culture media, and the supply of other equipment (such as Level 1 systems, clinical analyzers, laboratory ware washers, stability test chambers, etc.).

Type 3 pure water is the lowest water consumption grade, which is produced by reverse osmosis (RO) method. RO water is recommended for non critical laboratory applications, such as glassware cleaning, heated water baths, autoclaves, and supplying Grade 1 water systems.

Clinical laboratory reagent grade pure water (CLRW) conforms to the American Clinical and Laboratory Standards Institute (CLSI ®) According to the quality standard established in the guideline, the water purity of the clinical laboratory is>10M Ω• cm; TOC <500ppb； Bacteria<10cfu/mL; Particle filtration>0.22 μ m。