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Waterproof Double Junction pHTestr 30
from Oakton Instruments

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

Waterproof Double Junction pHTestr 30

Dual Display of pH and Temperature

  • Waterproof,Double,Junction,pHTestr,30,Oakton,InstrumentsHigh ±0.01 pH accuracy

  • Simultaneous pH and temperature (°C) display

  • Suitable for most ASTM and EPA test procedures

  • Double junction electrode ideal for dirty water, heavy sulfides, tris buffers and organics

  • Increased reference gel volume offers significantly longer electrode life

  • Certifiable to IP67 standards—waterproof and dustproof housing floats

  • Replaceable sensor lets you reuse same meter body, saving you money

  • Automatic temperature compensation

  • Three point push-button calibration

High ±0.01 pH accuracy in a waterproof pocket-sized instrument!

This unique Testr display pH and °C readings on a single large display. It also features a double junction electrode ideal for dirty water and solutions with heavy metals or other contaminants.

Its waterproof, dustproof housing protects Testr from rugged field or plant environments.

pHTestr 30 Manual

Learn more about the Oakton pHTestrs

See a demonstration of how to calibrate your Oakton pHTestr

See how easy is it to replace the sensor on your Oakton pHTestr

Troubleshooting your Oakton pHTestr

Range -10.00 to 15.00 pH

Resolution 0.01 pH

Accuracy +/-0.01 pH

Calibration Up to three points US or NIST(4.01, 6.86/7.00, 9.18/10.00)


Electrode Replaceable double junction

Temperature features ºC readout

Waterproof/Dustproof (IP67) Yes

Operating Temperature 0 to 50ºC

Power Four 1.5 V batteries

Battery life Over 500 hours

Dimensions 6.5" x 1.5" dia (15.5 x 3.8 cm dia)

Shipping weight 4.5 oz (125 g)



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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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