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Are you struggling to achieve precise and reliable measurements in water quality analysis?

The Ohaus Starter Pen Meter ST20C-B, brought by Liberty Scales, offers a seamless solution. Specially designed for laboratory and field environments, this compact device easily ensures you get accurate conductivity, temperature, pH, and other vital readings.

Key Benefits:

  • Versatile Measurements: Easily measure pH, conductivity, temperature, salinity, and total dissolved solids (TDS), all with a single device.
  • High Accuracy: Achieve dependable results with an accuracy of ±0.1 pH, crucial for sensitive laboratory applications.
  • Durable and Portable: With its robust ABS housing and IP67 waterproof certification, this meter is built to withstand rough, wet conditions without compromising performance.
  • User-Friendly Operation: Features a clear LCD with a secondary information line and operates on four 1.5V batteries for convenience anywhere you go.
  • Efficient Design: The automatic shut-off feature extends battery life, and easily replaceable electrodes ensure the meter is always ready for use.
  • Secure Handling: Comes equipped with a wrist strap to prevent accidental drops, safeguarding your investment.
  • 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 Pen Meter ST20C-B, you're not just buying a meter but investing in peace of mind. Feel confident in your water analysis results and enjoy the ease of use that comes with this professionally crafted instrument. Ideal for everyone from research scientists to environmental technicians, this meter from Liberty Scales will revolutionize how you measure and analyze, ensuring accuracy and reliability every time. Take a step towards precision with the Ohaus Starter Pen Meter—where your laboratory instruments become a gateway to consistent, accurate data.

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!


  • Meter Type: Conductivity

  • Measurement Range: 0.0 – 99.0 °C; 0 – 1999 μs/cm

  • Accuracy: ±0.1 pH

  • Measurement Resolution: 1μs/cm

  • Display: LCD

  • ATC: Yes

  • Temperature compensation: Automatic

  • Accuracy ± (Temperature): 0.5 °C

  • Automatic Shutdown: Yes, After 6 minutes of non-use

  • Battery Life: 200 Hours with Disposable


  • Calibration: 1 Point
  • Conductivity accuracy (±): 1.5 %
  • Conductivity measuring range: 0 – 1999 µS/cm
  • Dimensions: 1.5 in x 7.28 in x 1.77 in (38 mm x 185 mm x 45 mm) (LxHxW)
  • Measurement Range (Temperature): 0 °C – 99 °C
  • Net Weight: 3.88 oz (110 g)
  • Number of Buttons: 3
  • Power: 4 AG13 Batteries (Included)
  • Protection Rating: IP67
  • Temperature Display: Yes
  • Temperature Range: 0 °C – 99 °C
  • Temperature Sensor: 50 KΩ NTC
  • Working Environment: 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85% RH, non-condensing)
  • Wrist Strap: Yes
  • 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.