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Oakton® 50 Series Pocket Meters

Article No. 10855

Cup Type Conductivity Salinity TDS Meter

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. When you choose one of these conductivity testers, you get a pocketful of useful features and benefits.

Select your model

$235.00 excl. taxes & shipping cost


  • 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
  • Two types of meters available:
    • 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 are available in a pin type or a cup style measuring sensor and measure conductivity, TDS and salinity all in one instrument.
    • The PCTSTestr™ 50 Waterproof Pocket pH / Conductivity / TDS / Salinity Tester, Premium 50 Series is the ultimate tester for pH, conductivity, TDS, salinity, and temperature.
      • Up to 3 point pH calibration with NIST or USA auto buffer recognition
      • Conductivity, TDS, and salinity feature auto ranging based on the concentration of your sample
      • Great for water, wastewater, laboratory or plant use, these multiparameter testers feature long-life pH electrodes with a wide range of sample compatibility.
      • Pin-style conductivity sensors feature stainless steel electrodes for chemical resistance and durability.
      • Replaceable sensor module saves you money by reusing the meter body.

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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