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Oakton® 50 Series Pocket Meters

Article No. 10855

Cup Type Conductivity Salinity TDS Meter

  • The CTSTestr™ 50C Cup-Style Waterproof Pocket Conductivity / TDS / Salinity Tester
  • Premium 50 Series is a reliable 3-in-1 tool measures conductivity, TDS, and salinity
  • The testers have a cup style measuring sensor and measure conductivity, TDS and salinity all in one instrument

Select your model

$235.00 excl. taxes & shipping cost


  • The Oakton conductivity pocket testers stand up to everyday use, harsh environments, and the test of time.
  • The testers can even stand upright when the cap is used as the stabilizing base. 
  • Redesigned leakproof cap functions as a sample/calibration cup, hydrating cup, and stabilizing base to stand the meter upright
  • Combine measurement capabilities of several testers in one convenient pocket-sized unit
  • Easy-to-navigate interface for quick setup and calibration
  • Automatic temperature compensation ensures accurate reading in varying environments
  • The large display offers a better viewing angle, has indicators for battery life, readiness, and calibration, and shows both the parameter and temperature readings at the same time.
  • The cap features a fill line, so you know how much sample you need for an accurate reading when using the cap as a sample cup.
  • The wider design provides a base to keep the meter upright for hands-free measurements.
  • The keypad features fourth key to simplify menu navigation while keeping convenient one-touch calibration.
  • The housing is compatible with lanyards to prevent losing or dropping, but is still waterproof.
  • Advanced features include auto-shutoff, user-adjustable temperature coefficient, self-adjusting TDS and salinity factor, and low-battery indicator.
  • The testers bring the performance of your lab instruments out into the field.
  • Applications: agriculture, aquaculture & aquariums, cooling towers, education, electroplating, environmental monitoring, food & beverage, hydroponics, manufacturing, photo development, pools & spas, printing, water & wastewater treatment

Technical Attributes

  • Data
    Models:CTSTestr 50CPCTSTestr 50
    Range:pH:--1.00 to 15.0
    Conductivity:0.0 to 200.0 µS, 200 to 2000 µS; 2.00 to 20.00 mS
    TDS:0.0 to 100.0 ppm, 100 to 1000 ppm; 0.10 to 10.00 ppt (TDS factor 0.5)
    Salinity:0.00 to 10.00 ppt
    Temperature:32 to 140°F (0 to 60°C)
    Conductivity:0.1 µS, 1 µS; 0.01 mS
    TDS:0.1 ppm, 1 ppm; 0.01 ppt
    Salinity:0.10 ppt
    Temperature:0.1°C / 0.1°F
    Conductivity:±1% full-scale
    TDS:±1% full-scale
    Salinity:±1% full-scale
    Temperature:±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)
    pH Buffer Recognition:-USA 4.01, 7.00, 10.01; NIST 4.01, 6.86, 9.18
    Calibration:Up to 3 points (pH, conductivity and TDS); 1 point (salinity)
    TDS Factor:0.40 to 1.00 (selectable)
    Temperature Compensation:Automatic
    Power:Four AAA 1.5 V batteries (included)

Delivery Content

Instrument, protective plastic storage case, lanyard and batteries.
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