If different laboratories ultrapure water pollution levels compare, save with an organic solvent laboratory ultrapure water whose anions (particularly chlorine ions) and the concentration of VOC is increased more significant, probably due to the storage of hydrochloric acid, methylene chloride and tetrachloromethane of. Experimental analysis of VOC, due to a number of solvent extraction organic solvent is placed, resulting in a large number of organic solvents into the air. If set ultrapure water systems in the same environment, the organic solvent can contaminate ultrapure water through the air. So, if you want to be placed during the VOC analysis laboratory ultrapure water system, it must be isolated from the operating room to organic solvents. In addition, oily sign pen containing toluene, chloroform solvent correction fluid containing 1,1,1, during the experiment the use of these materials should be noted.

     Although the metallic elements in ultrapure water less susceptible to the environment, but to make ppt level of trace element analysis, it must be within the clean room, clean console, to prevent contamination of ultrapure water. For clean room cleanliness doing monitoring, you can use the above principle, ultra-pure water place for some time, household water machine manufacturers concentrated together in minutes