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Are you tired of unreliable and cumbersome water testing tools that complicate rather than simplify your analysis?

The Ohaus Starter Pen Meters ST20T-A offers a revolutionary solution to your water testing needs, combining robust functionality with user-friendly features. Designed to tackle the challenges of any water testing environment, from laboratories to fieldwork, this compact instrument ensures fast, accurate, and efficient water quality measurements.

  • Compact and Portable Design: Easily carry it wherever you go, perfect for field and lab work.
  • Durable Construction: Features an IP67 waterproof ABS housing and a protective sensor cap, making it resilient in tough environments.
  • Versatile Testing Options: Measures pH, ORP, conductivity, DO, salinity, TDS, and temperature, making it a comprehensive tool for all your water analysis needs.
  • Secure Usage: Comes with a wrist strap to prevent accidental drops and damage, ensuring long-term reliability.
  • Clear and Accurate Display: Equipped with an LCD that shows precise readings, enhancing your testing accuracy and reliability.
  • Energy Efficient: The automatic shut-off feature preserves battery life, offering more time between charges.
  • 5-Year Warranty: Enjoy peace of mind and long-term reliability with a comprehensive 5-year warranty on your investment.

Imagine the peace of mind and confidence you will feel with the Ohaus Starter Pen Meters ST20T-A by your side. No more second-guessing your data or struggling with bulky and complicated instruments. With this sleek, accurate, and durable pen meter, you can easily handle any water testing task. Enjoy the simplicity and precision that come with using a top-tier laboratory instrument. Order your Ohaus Starter Pen Meter today and transform your water analysis experience.

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: TDS

  • Measurement Range: 0.0 – 100.0 mg/L; 0.0 – 99.0 °C

  • Accuracy: ± 1.5% / ± 0.5 °C

  • Measurement Resolution: 0.1 mg/L

  • 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: NA

  • Conductivity accuracy (±): 1.5 %

  • Conductivity measuring range: 0.0 – 100.0 mg/L

  • 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.