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Facing issues with inconsistent or inaccurate water quality measurements?

Our Starter Pen Meters offer a definitive solution, providing reliable, on-the-go readings that streamline your laboratory and field operations.

Experience the fusion of simplicity and innovation with the Ohaus Starter Pen Meters ST20C-B. Engineered for accuracy and ease of use, these compact meters effortlessly deliver detailed pH measurements, conductivity, salinity, and more measurements. Ideal for laboratory science and water analysis professionals, this meter bridges the gap between complex lab instruments and portable convenience. With a robust design tailored for the harshest environments, you can perform essential tests with confidence and precision.

Key Benefits:

  • Versatile Measurement Capabilities: Accurately assess pH, conductivity, salinity, and temperature, all critical for thorough water analysis.
  • Robust and Waterproof Design: Features durable IP67 waterproof ABS housing to withstand challenging field conditions.
  • Compact and Portable: Designed for mobility, enabling fast and convenient testing wherever needed.
  • Extended Operation: Equipped with an automatic shutdown feature and long-lasting batteries to ensure consistent performance during extended use.
  • User-Friendly Interface: Large LCD enhances readability and operation, making it accessible even for novice users.
  • 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 Meters ST20C-B, you're not just getting a tool; you're investing in reliability and peace of mind. The ease and accuracy it brings to your water quality assessments will leave you feeling confident in your data and able to make informed decisions swiftly. Enhance your laboratory and field analysis capabilities today and experience the professionalism and precision that come with this exceptional meter.

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 Batteries

  • 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.