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Professional Multi-meter for pH, Conductivity, TDS & Temperature

This professional pH and conductivity meter, the 430 is designed to readily withstand the rigours of portable analysis, while reliably measuring pH and Conductivity in a simple and professional manner.


  • Simultaneous readout of pH, Conductivity or TDS and
  • Temperature
  • Fully featured pH and Conductivity meters in a single, hand held unit
  • Automatic or Manual calibration of both functions
  • Power on self-check routine
  • Calibration diagnostics
  • Environmentally protected case to IP65

This product allows the simultaneous readout of pH, Conductivity or TDS and Temperature using the custom backlit liquid crystal Display. Calibrations are clearly indicated, together with the parameter in error.

It offers 1 or 2 point pH calibration and automatic buffer recognition with manual override. Conductivity calibration can be performed on standard solutions or by direct cell constant entry. The Conductivity/TDS range is automatically selected for optimum resolution and temperature compensated using an adjustable temperature coefficient.

The 430 is supplied with a combined and pH probe assembly (a temperature sensor is also incorporated to provide automatic temperature compensation). The probe connects to the instrument via a single mini-DIN connector for operator convenience.

An indication of battery life is also permanently shown on the display. An automatic switch off facility helps to conserve battery life. This product is ideal for field or any portable situation.


Specification Range Resolution Accuracy
pH (1 or 2 point call): 0 to 14pH 0.01pH ±0.02pH
Conductivity 5 switched ranges: 0 to 19.99µS—0 to 199.9mS 0.01µS, 0.µS, 1µS, 0.01mS, 0.1mS ±0.5% ±2 digits
TDS 5 switched ranges: 0 to 19.99mg/l—0 to 199.9g/l 0.01mg/l, 0.1mg/l, 1mg/l, 0.01g/l, 0.1g/l ±0.5% ±2 digits
Temperature -9.9 to +99.9°C / 32 to 212°F 0.1°C/ 1°F ±0.5°C / ±1°F
ATC 0 to 99.9°C / 32 to 212°F
Manual Temp. Comp.: 0 to 99.9°C / 32 to 212°F
Auto Buffer Recognition: 4, 7, 9.22 and 10.00 (manual override facility)
Auto Standard Recognition: 10µS, 84µS, 1413µS, 12.88mS
Cell Constant: 0.01 to 19.99
EC Ration (TDS): 0.50 to 0.80
Reference Temperature: 18, 20 or 25°C
Temperature Coefficient: 0.00 to 4%/°C
Power: 2 x AA Batteries (included)
Battery Life: 100 hours typical (@ 25°C with alkaline cells)
Size: 175(l) x 75(w) x 35(d) mm
Weight: 250g

Technical Support

If you require additional information or specialist technical support concerning our professional multi-meter for pH, conductivity, TDS and temperature please contact Accepta's technical support team.

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