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7PROS CALIBRATION BUFFER POWDER
FULL RANGE. You get 5 sets. Each set includes one package of 4.00, one of 6.86 and one of 9.18 calibration solution for all pH needs
FAST and EASY. No need to measure, just mix individual packs with distilled water.
ACCURACY. Calibration powders enable you to test the pH of your pool, aquarium, water, and more quickly with your pH tester / meter
LONG -TERM USE. Save time and money by mixing powders in a jar of distilled water. This lets you keep them longer and more readily available without needing more packets!
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