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Waterproof Double Junction pHTestr 20
from Oakton Instruments

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

Waterproof Double Junction pHTestr 20

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

  • Waterproof,Double,Junction,pHTestr,20,Oakton,InstrumentsSuitable 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

Now you can have high ±0.01 pH accuracy in a waterproof pocket-sized instrument!

These instruments also feature a double junction electrode that is ideal for dirty water and solutions with heavy metals or other contaminants.

Testr features a waterproof, dustproof housing that protects your instrument from rugged field or plant environments.

pHTestr 20 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 0.00 to 14.99 pH

Resolution 0.01 pH

Accuracy +/-0.01 pH

Calibration Up to 3 points US or NIST (4.01, 6.86/7.00,9.18/10.00)


Electrode Replaceable double junction

Waterproof/Dustproof (IP67) Yes

Operating Temperature 0 to 50ºC (32 to 122ºF)

Power Four 1.5 V batteries

Battery life Over 500 hours

Dimensions 6.5" x 1.5" dia (16.5 x 3.8 cm)

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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