Custom pH Buffers to Calibrate the HOBO MX2501 pH Logger

The HOBO MX2501 pH logger calibration procedure is only designed to work with National Bureau of Standards (NBS) pH buffers 4.01, 7.00, and 10.00. However, users can check the calibration of the logger in any buffer that is at a similar temperature to the logger’s calibration temperature and that falls within the operating pH range of the logger (pH 2-12).

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Measurement and accuracy