认识实验室用纯水和超纯水（Understanding of pure water and ultrapure water for Labo.doc

　　认识实验室用纯水和超纯水（Understanding of pure water andultrapure water for laboratory） 　　With the progress of science and technology, understanding ofall kinds of things in nature are towards micro nature, thedirection of development, requires a lot of experiments,detection of impurities in reagents or training has reached theppb level, and some even reach ppt level; as in life scienceresearch process, a variety of pollutants the water is verysensitive, especially heavy metals and dissolved organicmatter; HPLC requirements of the ultra pure water and so on. 　　In view of this, a number of professional researchorganizations have established water quality standards. Theseorganizations and standards are: People s Republic of Chinanational standard GB6682-92 analysis of laboratory waterspecifications and test method, People s Republic of Chinanational standard GB/T11446. 1-1997 electronic grade waterspecifications and test methods, American Chemical SocietyOrganizations (ACS) , American Society for testing andmaterials test organization (ASTM) , the InternationalCommittee for clinical laboratory standards (NCCLS) , UnitedStates Pharmaceutical Association (USP) . Here we first on themain application of pure water and ultrapure water to do asimple introduction: 　　1, reverse osmosis chemical reagents, cleaning the last buffer,the preparation of the laboratory ware water microbial culturemedium preparation of the water hydrogen generator, indoorhumidifier, autoclave with pure water or the animal drinkingwater etc. ; 　　2, ultra pure water: animal and plant cell culture of variouswater for medical instrument, biochemical analyzer,hemodialysis instrument and water analysis reagents and drugdilution water in physiology and pathology, toxicologyexperiment water and medicine preparation room and the hospitalcentral laboratory with purified water and high pure water andthe water tube atomic absorption spectrometry the water babiesall kinds of high performance liquid chromatography, ionchrom