TO borrow a few words from Vinny
Taylor test kit
Good luck, in our experience and to test out advise from Vinny and others I bought a 'Taylor Trouble Shooter' kit. Then I tested the water with the kit and also the last test strip in the jar. I got two very different results, SO I took a water sample to our dealer and had them perform thier test. The dealers (hach) test was almost exactly the same as the Taylor. I now agree with others on this site and will never use the strips again. By the way our strips were not expired either.