Starter 3100m pH & conductivity benchStarter 3100m pH & conductivity benchStarter 3100m pH & conductivity benchStarter 3100m pH & conductivity bench

Starter 3100m pH & conductivity bench

  • 3-point pH calibration supports precise readings
  • -2.00 to 20.00 pH
  • 0 to 100 psu salinity measurement range with 0.01 psu resolution

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 It combines all your pH, ORP, conductivity, TDS, salinity, resistivity, and temperature measurements - in one smart device. 

 Ideal for a wide range of lab applications, the ST3100M is incredibly easy to use.

Equipped with software to ensure the reliability of your readings, and RS232 connectivity to store and transfer data conveniently, the ST3100M is a great addition to your lab.


Measurements of pH, redox potential (ORP),conductivity, total dissolved solids (TDS),salinity, resistivity, and temperature.


Backlit liquid crystal display (LCD)


AC adapter (included)


RS232 (included)


ABS case, user cover, mechanical keys

Design features

Three-point calibration (pH),electrode status icon, parameter toggle button, compact design.

Starter 3100m pH & conductivity bench with a great price

  1. Software helps ensure reliable readings
  2. RS-232 interface supports data storage and transfer to compatible devices
  3. Backlit LCD for easy viewing in low lighting
  4. Durable housing protects sensitive components
  5. Mechanical keys make operation easy
  6. 3-point pH calibration supports precise readings
  7. Electrode condition icon offers status information at a glance
  8. Parameter toggle button provides quick control over settings
  9. Compact design offers flexible placement options
  10. 0 to 20 MΩ resistivity measuring range with 0.01 MΩ resolution and 1 mV voltage resolution
  11. 0.1mg/1 to 199.9 g/1 (rDS) TDS measurement range with 0.01 mg/L auto-range resolution
  12. 0 to 100 psu salinity measurement range with 0.01 psu resolution
  13. Stores up to 99 sets of pH and conductivity data readings and last calibration data
  14. 30 KΩ temperature sensor with automatic compensation for exact readings

     Combining all of the features from the benchtop pH and conductivity meter into one multi-meter, makes testing pH, ORP, conductivity, salinity, TDS, resistivity, temperature a seamless process.

     A user-friendly bench meter with an innovative design, including an adjustable standalone electrode holder and large backlit LCD display.

     A 99-item memory for pH and/or conductivity measurements makes for efficient data documentation. RS232 interface allows for connection to external devices for data storage or transfer.

Measurement Range00.0 μS/cm – 199.9 mS/cm; -5 °C – 110 °C; -2.00 – 20.00 pH; -1999 – 1999 mV; 0-20 MΩ•cm
Measurement Resolution0.01 μS/cm; 0.1 °C; 0.01 pH; 1 mV; 0.01 Ω•cm
Accuracy± 0.5 % F.S.; ±0.01 pH; ±0.3 °C; ±1 mV
DisplayLCD, backlight
ElectrodeST310 (Included); STCON3 (Included)
Accuracy ± (mV)1 mV
Accuracy ± (Temperature)0.3 °C
Battery LifeNot Applicable
Conductivity accuracy (±)0.5 %
Conductivity measuring range0.0 – 199.9 µS/cm
Dimensions3.07 in x 6.89 in x 8.66 in (78 mm x 175 mm x 220 mm) (HxLxW)
In-Use CoverIncluded
Measurement Range (Temperature)-5 °C – 110 °C
Measurement Range-1,999 mV – 1,999 mV
Net Weight2.09 lb (0.95 kg)
pH accuracy (±)0.01
pH measuring range-2 – 20
pH resolution0.01
Power100 - 240 V
Resistivity measuring range0 MOhm – 20 MOhm
Resistivity resolution0.01 MOhm
Resolution Cond. (Variable)0.01 – 200
Resolution (Voltage)1 mV
Temperature compensationAutomatic
Temperature resolution0.1 °C
Temperature Sensor30 KΩ NTC
Working Environment14°F – 104°F, 85%RH, non-condensing (-5°C – 40°C, 85%RH, non-condensing)