pH Calibration
14
Calibration
This section describes the basic calibration method of each measurement parameter using
OAKTON 300 series and sensors (sensor head and sensor cartridge connected) or electrodes
(ion selective electrode and BNC conversion connector connected).
pH Calibration
Calibration is necessary for accurate pH measurement. To perform pH calibration,
follow the procedure detailed below.
Prerequisites
Clean the pH sensor with DI (deionized) water and wipe it with tissue paper.
Switch on the meter and plug in the pH sensor.
Prepare buffer solution required for calibration.
Set the Focus area in pH measurement mode.
Place the pH sensor at least 3 cm in the buffer solution.
Note
Perform two-point calibration using:
pH 7.00 and 4.01 for acidic sample
pH 7.00 and 10.01 for alkaline sample
Perform three-point calibration using pH7.00, 4.01 and 10.01 if you are unsure of the
expected sample pH value. It is recommended to calibrate with pH7.00 first.
Default buffer Group set up is USA. If you like to change to NIST, DIN, Custom refer to
Buffer Group on page 35.
Tip
To abort an ongoing calibration process at any point of time, press the
key.
www.calcert.com
1.800.544.2843
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Summary of Contents for Oakton 300 Series
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