[ssomani1]

Hello.  I am doing some research for work on test strips.  Two questions that were asked to me were how do the test strips work and the associated accuracy.  Can someone point me in the right direction, since I am looking for information on a quite a few different test strips (Chlorine, Chloride, Hardness, Copper, Arsenic etc.) and associated accuracies.  Any help you can provide would greatly be appreciated.