ENVIRONMENTAL EXPRESS Colorimeter: Chlorine, 530 nm Wavelengths, 0.01 A, 3% Accuracy, LED The newly designed "textile" headband

The newly designed "textile" headband with extra cushion offers all day comfort

and quartz

*WHO blood pressure indicator

Material Used : Wood

It can be placed indoors or out & constantly recycles water from a hidden reservoir

ENVIRONMENTAL EXPRESS Colorimeter: Chlorine, 530 nm Wavelengths, 0.01 A, 3% Accuracy, LED The newly designed "textile" headbandENVIRONMENTAL EXPRESS Colorimeter: Chlorine, 530 nm Wavelengths, 0. 01 A, 3% Accuracy, LED Single parameter colorimeters test one specific water quality parameter. These handheld units are more portable than benchtop meters for testing in the lab or field. Item 831EX5 Mfr. Model Model 200 Brand ENVIRONMENTAL EXPRESS Product Type Colorimeter Test Parameters Chlorine Wavelengths 530 nm Resolution 0. 01 A Accuracy 3 % Range Max (ppm) 8 Range Min (ppm) 0.