
Analytical instruments
pH meter calibration: points and preparation

pH meter calibration helps you evaluate measurement results against your quality requirements.
SK's pH meter scope
TISI 0261 issue 03 lists nominal pH 4, 7 and 10 using certified reference materials in the laboratory and on-site. DC voltage is a separate parameter; confirm the instrument, method, points and location before commissioning.
References: ขอบข่าย สมอ. TISI 0261 ฉบับ 03 หน้า 13 และ 23
Preparing for calibration
Provide the meter and electrode details, working pH values, acceptance criteria and requested location. Follow the manufacturer’s instructions for electrode storage, buffer handling and temperature.
References: Mettler Toledo: คู่มือการดูแลสารละลายและหัววัด pH
FAQ
Should I send the electrode?
Identify the complete system and agree the components to be evaluated with SK before shipment.
Related calibration guides
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- Weighing scale calibration: why it matters and how to prepare
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