Meters are available in three formats:
- Pocket-sized testers: economical and compact for routine, non-critical measurements
- Handheld portable meters: offer data logging and stability features and provide reportable pH accuracy for the field, manufacturing floor, and laboratories
- Benchtop meters: provide the best accuracy, more robust data management, and security options for stationary laboratory applications
Most pH measurement systems feature standard electrodes with glass bulbs made from pH-sensitive glass. For specialised applications, a variety of configurations is available.
pH meters require calibration standards to ensure their readings are traceable to a standard. Select a pH 7 buffer plus at least one other pH value near your expected measurement range. Using solutions of known pH value enables you to adjust the system for accurate measurements. Perform calibration before each reading or each set of readings.