Laboratory ultrapure water equipment is a specialized pure water preparation device for experiments in laboratories and tests in testing rooms. It is particularly suitable for application in testing, scientific research institutions, hospital testing rooms and laboratories, etc. Laboratory ultrapure water equipment can be regarded as a second-generation product in terms of grade, with the first generation being the traditional distiller. Now let's talk about the classification of laboratory ultrapure water equipment and water quality standards.

I. Classification of Laboratory Ultrapure Water Equipment Types

1.Conventional analytical ultrapure water machines, this relatively common type of equipment is more suitable for routine analytical experiments and the preparation of buffer solutions, etc.

2.Low-organic type ultrapure water machine, which focuses on removing organic matter from water, is more suitable for liquid chromatography, gas chromatography, total organic carbon analysis, toxicology research, environmental protection experiment analysis, etc.

3.Pyrogenic type ultrapure water machine, this type of ultrapure water machine mainly removes corpses from water and can be used in scientific research projects such as amino acid analysis, protein purification, animal and plant cell culture, tissue culture, and molecular biology experiments.

4.The low organic matter and pyrogen-free type combines the features of the above two types of ultrapure water machines. It can not only remove organic matter but also remove dead bodies, making it suitable for all the projects that the above two types of ultrapure water machines are applicable to

Ii. Classification of Laboratory Water Standards

The quality of pure water is in accordance withGB6682-2008According to the national standards for water used in analytical laboratories, it can be classified into the following three categories

(1Grade 3 water standard, resistivity0.2MΩNaN@25℃;

(2Grade 2 water standard, resistivity≥1MΩNaN@25℃;

(3Grade one water standard, resistivity≥18.25MΩNaN@25℃.

Iii. Common Indicators for Evaluating Water Quality

1 Resistivityelectrical resistivity)

The indicator for measuring the electrical conductivity of laboratory water, with the unit beingMΩ·cmAs the inorganic ions in water decrease, the resistance increases and the value gradually grows.

2 Total organic carbonTotal Organic Carbon,TOC)

The concentration of carbon in water reflects the content of oxidized organic compounds in water, with the unit beingppmorppb.

3 "InsideEndotoxin)

Gram-negative lipopolysaccharide cell wall fragments, also known as"Pyrogen", unitcuf/ml.

The above is Introduction to the classification of laboratory ultrapure water equipment and water quality standards. If you have any questions regarding ultrapure water equipment, please consult Beijing Yuanlai Water Treatment Equipment Co., LTD., which focuses on the water treatment industry15In this year, you can trust us!