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Oakton™ pHTestr 50 Waterproof Pocket pH Tester

Oakton pHTestr 50 has a replaceable double junction sensor for longer life, an expanded number of applications, and easy maintenance. Versatile, compact design works in the field or laboratory

Catalog No. 11-747-327

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Includes: Protective plastic storage case, lanyard, and 4 AAA batteries.



  • Redesigned leakproof cap functions as a sample cup, hydrating cup, and stabilizing base to stand the meter upright
  • Easy-to-navigate interface for quick setup and calibration
  • Replaceable, double-junction electrode sensors save time and money  
  • Automatic temperature compensation ensures accurate reading in varying environments

Warranty and Services

1 Year



Graphics, Dot Matrix 80 x 100 Pixel
41 to 113°F
Checkmark indicator
32 to 140°F
0 to 60°C
±0.9°F (0.5°C) from 32 to 122°F (0 to 50°C); ±1.8°F (1.0°C) from 122 to 140°F (50 to 60°C)
Four AAA alkaline
Oakton pHTestr 50 Waterproof Pocket pH Tester, Premium 50 Series
Water quality testing, buffer and reagent production, electrochemistry
-1 to 15
Hold Data
pH, Temperature
Integral electrode
5 to 45°C
1 Year
250+ hours
Up to 3 points
Four AAA alkaline batteries
Protective plastic storage case, lanyard, and 4 AAA batteries.
50 Series
pH Meter
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