WPA CD640 Digital PH meter

• Routine laboratory pH measurement in academic and industrial settings.
• Quality control checks in food and beverage production.
• Environmental monitoring, such as water and wastewater analysis.
• Chemical and pharmaceutical research and development.
• Educational purposes in science curricula.

Measurement range

Typically 0 to 14 pH, with common models offering resolution to 0.01 pH.

Temperature compensation

Units of this type commonly feature automatic or manual temperature compensation for improved accuracy.

Power supply

Typically mains powered (e.g., 230V AC, 50Hz for UK operation) or battery operated for portability.

Display type

Digital LCD display is standard for clear reading of pH values and temperature.

Calibration points

Commonly supports 1 to 3 point calibration for accurate measurement over the desired range.

Output options

Some models may offer data logging or connectivity options (e.g., RS232) for data transfer.

• What is the typical lifespan of a pH electrode?

  The lifespan of a pH electrode varies significantly based on usage, maintenance, and the types of samples measured, but typically ranges from 6 months to 2 years with proper care.

• Are calibration solutions included with used pH meters?

• What maintenance is required for a digital pH meter?

• Can this unit measure other parameters besides pH?

• Is this unit suitable for field use?

pH meters and sensors attract strong buyer interest in laboratory, biotech and pharmaceutical settings. Industry consensus values accuracy, calibration stability and sensor longevity as critical factors. Used units typically offer good value if maintained properly. Buyers prioritise checking calibration history, electrode condition and display functionality before purchase. Reputable brands retain performance well. Common strengths include reliable readings in controlled environments and straightforward operation, though sensors require regular maintenance and occasional replacement to sustain accuracy standards.

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