My total alkalinity readings were between 40 and 90 ppm. Tested 50 times and used an entire bottle of reagent strips. Never get the same reading twice. I did EVERYTHING right. Cleaned with a brush after each test. washed 3 times. Fill the box to the brim. I lowered the strips to the bottom of the cuvette. Didn't bend the strips. 2 beats per second forward and backward. Do not spill water on the camera. NOT EXACTLY! don't waste money. For $300 bills, that's a crime!
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