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Are you struggling with accurate water analysis in varied locations?

The Ohaus Starter 300C Conductivity Portable Meter is your ideal solution, bringing laboratory precision to the field. This compact and robust meter is designed for professionals who demand reliable and precise conductivity and total dissolved solids (TDS) measurements on the go. Whether you're a field scientist, a quality control manager, or an environmental technician, this meter delivers accurate results, even in challenging environments.

Key Benefits:

  • Versatile Measurement Range: From 00.0 μS/cm to 199.9 mS/cm and 0.1 mg/L to 199.9 g/L (TDS), equipped to handle a wide range of water quality testing.
  • High-Resolution Display: Features a clear LCD for easy reading of measurements in any field conditions.
  • User-Friendly Operation: Powered by 4 AAA batteries and featuring a straightforward calibration process, ensuring you spend less time setting up and more time measuring.
  • Advanced Design: Includes a four-pole linear electrode with a temperature sensor to prevent errors from polarization and pollution effects.
  • Data Management: Capable of storing up to 30 measurements and recalling the last calibration data with a single touch, enhancing productivity and accuracy.
  • 5-Year Warranty: Enjoy peace of mind and long-term reliability with a comprehensive 5-year warranty on your investment.

When you choose the Ohaus Starter 300C Conductivity Portable Meter, you are not just buying a meter but investing in peace of mind. Experience the satisfaction of obtaining dependable data quickly and easily, no matter where your work takes you. With its robust construction and portable design, you can feel confident in your measurements and focus more on what matters—your work and research. Enhance your toolkit with this indispensable instrument from Liberty Scales, a trusted name in laboratory instruments, water analysis meters, and electrodes.

Reach out to our dedicated team for further information and personalized assistance. Call us at (661) 888-1919 or email us at We're here to help you every step of the way!


Measurement Range: 00.0 μS/cm – 199.9 mS/cm; 0 – 100°C; 0.1 mg/L – 199.9 g/L (TDS)
Measurement Resolution: 0.1 °C; 0.01 μS/cm; 0.1 mg/L
Display: LCD
Accuracy ± (Temperature): 0.3 °C
Battery Life: 250 Hours with Disposable Batteries
Calibration: 1 Point
Conductivity accuracy (±): 0.5 %
Conductivity measuring range: 0.01 μS/cm-199.9 mS/cm
Dimensions: 6.69 in x 1.38 in x 3.54 in (170 mm x 35 mm x 90 mm) (LxHxW)
In-Use Cover: No
Measurement Range (Temperature): 0 °C – 100 °C
Net Weight: 0.35 lb (0.16 kg)
Parameter: Conductivity / TDS
Power: 4 AAA (LR03) Batteries (Included)
Resolution Cond. (Variable): 0.01 – 1
Temperature compensation: Automatic
Temperature resolution: 0.1 °C
Temperature Sensor: 30 KΩ NTC
Working Environment: 41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing)

  • Free Shipping: Available across 48 continental USA. Extra charges may apply for residential, farm, or rural areas.
  • Express Shipping: Overnight and faster shipping options available at additional costs. Quotes obtainable via email.
  • Delivery Time: Typically 5 to 7 business days, varying by location and external conditions.
  • Tracking Information: Provided via email upon shipment. Accessible through account login. Additional information available upon request.
  • Return Policy: 15-day return period for unused, original condition products. A 25% restocking fee applies. Buyer covers original and return shipping costs.
  • Customer Support: Contact at (661) 888-1919 or for queries or concerns about shipping.