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Home  >>  Products  >>  pH & Conductivity  >>  pH/ORP TesTrode

pH / ORP TesTrode Tester

The All-in-One Tester

pH/ORP Testrode

This pH/ORP Tester is perfect for general purpose, environmental, pool & spa, aquaculture or other pH and temperature measurements.

With it’s ±0.02 pH unit accuracy and the ability to calibrate it with 1, 2 or 3 pH Buffers that are automatically recognized, you get a very capable tester at a fraction of the cost of a portable or benchtop pH/ORP Meter.

With one of the largest and easiest to read displays in the industry, you can see either pH (or ORP) simultaneously with the temperature ·°F or °C) as well as the date time and other measurement details. The display is even backlit so measurements at night or in low-light conditions are feasible - try to find this feature in a pH/ORP Tester!

The pH/ORP TesTrode makes use of the date and time stamp on each of its available 25 memory points for your data. Easily recall the data for your critical record keeping requirements.




  • Large, Easy-to-Read Backlit Display - Includes pH/ORP reading, °F or °C Temperature. Time and Date, Mode, user prompts, and other information are prominently displayed and is backlit for reading in low-light conditons.
  • Flat Sensor Replaceable Electrode - All electrodes eventually become inaccurate or fail. Instead of replacing the whole unit, you can just replace the electrode portion. Or, get an optional cabled or more durable electrode, as needed for your application.
  • 1, 2 or 3-Point Calibration - Do a full pH calibration with multiple points or just an offset adjustment with one buffer. Autobuffer recognition of standard pH sets 4.01/7.00/10.01 or 4.01/6.86/9.18.
  • ±0.02 pH Unit Accuracy - Accuracy as good as more expensive full pH Meters
  • Store & Recall Data - Store up to 25 measurements with the date and time. Easily retrieve your data later.
  • Automatic Temperature Compensation - pH readings are compensated for temperature giving you the confidence and accuracy you require. A thermistor is integral in the electrode.
  • Waterproof and Durable - The durable design is waterproof to IP67 specifications to ensure accidents are not catastrophic failures.

Technical Data

Technical Data
Measurement Modes: pH, ORP, Temperature
pH & ORP: Range: 0.00 to 14.00 pH units / -1800 to 1800 mV ORP
Resolution: 0.01 pH units / 0.1mV (inside ±1000mV) and 1 mV (outside ±1000mV)
Accuracy: ±0.5°C
Temperature: Range: 0 to 60°C or 32 to 140°F (selectable)
Resolution: 0.1°C/°F (1°F when >100°F)
Accuracy: ±0.5°C
Standard Electrode Polycarbonate body housing, 12mm diameter, 4.4”/111mm length, single-junction gelled Ag/AgCl reference (sealed) with ceramic pin/pellon junction, ASI-type VIII full range pH sensor, Platinum disc for ORP sensor, and integral thermistor. Includes 16mm collar for electrode stand use.
Operating Range: 0 - 60°C
Power Requirements: 2x CR2032 3V Batteries (included)
Battery Life: >25 Hours Typical (without use of back-lit display)
Battery Saver Feature: After 8 minutes of non-use, low battery indicator at <10% remaining
Dimensions: Length: 4.2” (meter) or 9.3” with standard electrode (overall) 106.2mm / 236mm
Width: 2.35” / 59.8mm
Thickness: 0.98” / 25mm
Display: 1.6” x 1.2” / 40.8mm x 29.4mm
Weight: approx. 4.5 ounces / 127 grams
Calibration (pH Only): User-selected 1, 2 or 3-point calibration with the following notes:
1 point (offset adjustment to ideal slope)
2-point and 3-point (slope and offset adjusted)
Automatic Buffer Recognition: User-selected standard buffer sets:
USA 4.01 / 7.00 / 10.01 or NIST 4.01 / 6.86 / 9.18
Memory: Non-volatile, 25 points with recall and time/date stamp
Compliance: Meets IP67 waterproof specs, CE testing in process



Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices

Included with the pH/ORP TesTrode are: Single-Junction General Purpose Electrode, Batteries, pH 4 & 7 Buffers, Calibration Bottles, Instruction Manual, Electrode Storage Boot, and Soaker Bottle to keep the electrode ready to use.
PH-929101 TesTrode w/full bulb pH and Platinum disc ORP combination electrode in polycarbonate housing, single junction, 10K thermistor $176.40
PH-929103 TesTrode w/full bulb pH and Platinum disc ORP combination electrode in epoxy housing, single junction, 10K thermistor 181.65
PH-929121 Flat Sensor pH/Temp
Spear Tip, Flat Sensor, Epoxy Body


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