Review on Digital Accuracy Tester Buffer Powders by Eric Pruett
Started great, didn't hold up
Started well, almost like a reagent tester, but despite careful washing and drying, it keeps getting bigger or worse. from an error of 0.02 to 1.3 in the last test, and on distilled water - 9.35. was a good idea, but you can't count on it. and if I'm going to do a reagent test to see if it's working, why bother? I like the technique, I can try another block but not another yellow style.
- pH test
- Long delivery time
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