Just a bit of information for all users looking into test kits. A week ago I ordered a test kit that I was not happy with at all. So today I took the advice of these pool gurus and purchased a TF100 test kit to get the best testing possible. Now keep in mind I ordered it at 12:30 today. Can you imagine my suprise when a woman just knocked on my door and delivered it to me personally at 3:15! Awesome service...now to get to work and post my results so these magicians can continue to help me. Thanks guys!!!