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Introducing the Ohaus Starter Pen Meters ST20C-A, the perfect companion for all your pH and conductivity measurement needs.

Compact and budget-friendly, these pen meters offer simplicity and efficiency in one sleek package.

The durable IP67 waterproof ABS housing ensures that the meter can withstand even the harshest of environments. No need to worry about accidental spills or drops, as the protective sensor cap and wrist strap provide added security against damage. This means you can confidently use this pen meter in rough, wet conditions without fear of compromising its accuracy or performance.

With the Ohaus Starter Pen Meters ST20C-A, you'll have access to a wide range of measurement capabilities. Whether you need to measure pH levels, oxidation-reduction potential (ORP), conductivity, dissolved oxygen (DO), salinity, or total dissolved solids (TDS), this versatile pen meter has got you covered. The liquid crystal display (LCD) with a secondary information line (on select models) ensures that you have all the data you need right at your fingertips.

Operating the pen meter is a breeze, thanks to its simple design. The included 4 1.5V batteries provide long-lasting power so that you can rely on accurate measurements throughout your experiments or daily tasks. Plus, the automatic shutdown feature helps conserve battery life, ensuring that your pen meter is always ready for action when you need it.

Designed with convenience in mind, the Ohaus Starter Pen Meters ST20C-A features easily replaceable electrodes, making maintenance effortless and hassle-free. Focus on your work without worrying about complicated upkeep procedures.

Whether you're a laboratory professional, a researcher, or simply someone who requires accurate pH and conductivity measurements on the go, the Ohaus Starter Pen Meters ST20C-A is your reliable partner.

Invest in this portable scale from Ohaus and experience precision and durability like never before.

  • Meter Type: Conductivity

  • Measurement Range: 0.00 – 199.9 μs/cm; 0.0 – 99.0 °C

  • Accuracy: ± 1.5% / ± 0.5 °C

  • Measurement Resolution: 0.1 μs/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: 0.0 – 199.9 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.