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Pinpoint™ High-Precision pH Calibration Fluids
4.000 +/- 0.002
7.000 +/- 0.002
10.000 +/- 0.005
These come in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enough fluid for a complete calibration (about 30 ml) and is intended to be discarded after use. There is a free sample of these included with each Pinpoint pH Monitor™. This monitor should be calibrated monthly.
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