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Oakton pHTestr 50 Waterproof Pocket pH Tester

Product SKU: WD-35634-15

Quick Overview

  • Optimal for water, wastewater, laboratory and field use

  • Clog resistant Electrode

  • Up to 3-point pH calibration

  • Replaceable, double-junction electrode sensors

  • Self diagnostic error messages

  • Automatic temperature compensation (ATC)

  • Auto-Shut-off

  • Low battery indicator

Download pH Tester 50 Sell Sheet

Download pH Tester 50 Instruction Manual

Availability: In stock



Oakton pHTestr 50 Waterproof Pocket pH Tester (each)

The Oakton pHTestr 50 has a replaceable double junction sensor for longer life, an expanded number of applications, and easy maintenance. Double-junction electrode sensor handles wastewater and solutions containing sulfides, heavy metals, and TRIS. Electrode sensor offers a clog-resistant Kynar® junction and a recessed, glass pH bulb to protect against breakage. Valox sensor housing resists most chemicals.

The keypad clicks to confirm operation, and allows access to a variety of functions. Calibrate up to three pH points with the auto-buffer recognition at both USA and NIST standard buffers. Additional features include an automatic temperature compensation (ATC), hold function, auto-off function, self-diagnostic error messages, and a three-segment battery-life indicator.


  • 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

Additional Information

Product Type: pH Tester
Brand: Oakton
Range: -1 to 15 pH
Resolution: 0.01 pH
Accuracy: ±0.01 pH
Temperature Range: 32 to 140°F (0 to 60°C)
Temperature Resolution: 0.1
Temperature Accuracy: ±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)
Calibration: Up to 3 points
ATC: Yes
Operating Modes: PH
Power Supply: AAA Batteries
Notes: Buffer Recognition: USA 4.01, 7.00, 10.01 and NIST 4.01, 6.86, 9.18
Includes: Protective plastic storage case, lanyard, and 4 AAA batteries