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Do you want to avoid unreliable and complicated pH measurements in your water analysis tasks?

Liberty Scales presents the Starter 300 pH Portable, a state-of-the-art solution from our expansive range of laboratory instruments. Designed for precision and ease, this portable meter eliminates the challenges of water quality testing, providing accurate and consistent results every time.

With the Starter 300 pH Portable, take control of your pH and oxidation-reduction potential (ORP) measurements with confidence. 

Key Benefits:

  • Precision Engineering: Enjoy ±0.01 pH accuracy and automatic temperature compensation, ensuring reliable readings in fluctuating conditions.
  • Easy Calibration: Features automatic buffer recognition and a simple calibration process that reduces errors and saves time.
  • Durability for Field Use: Constructed with a robust ABS housing and an IP54 rating, it’s designed to withstand dust, splashes, and the rigours of outdoor environments.
  • Data Management: A 30-measurement memory allows for efficient data tracking and quick access to previous records.
  • User-Friendly Design: Comes equipped with a clear LCD, wrist strap for secure handling, and a meter stand for stability during use.
  • 5-Year Warranty: Enjoy peace of mind and long-term reliability with a comprehensive 5-year warranty on your investment.

After integrating the Starter 300 pH Portable into your laboratory or field toolkit, you’ll feel a profound sense of reliability and efficiency. This meter streamlines the water analysis process and empowers you with the accuracy needed for critical environmental assessments or quality control checks. Experience the peace of mind of knowing your measurements are precise and your equipment is top-notch. Choose the Starter 300 pH Portable and elevate the standard of your scientific endeavours with Liberty Scales' trusted precision.

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: 0 – 100°C; 0.00 – 14.00 pH; -1999 – 1999 mV

  • Accuracy: ±0.5 °C; ±1 mV; ±0.01 pH

  • Measurement Resolution: 0.1 °C; 0.01 pH; 1 mV

  • Display: LCD

  • Electrode: ST320 (Available as an accessory)

  • Accuracy ± (mV): 1 mV

  • Accuracy ± (Temperature): 0.5 °C

  • Battery Life: 500 Hours with Disposable Batteries

  • Calibration: 3 Point

  • 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

  • Measurement Range: -1,999 mV – 1,999 mV

  • Net Weight: 0.35 lb (0.16 kg)

  • Parameter: pH / ORP

  • pH accuracy (±): 0.01

  • pH measuring range: 0 – 14

  • pH resolution: 0.01

  • Power: 4 AAA (LR03) Batteries (Included)

  • Resolution (Voltage): 1 mV

  • Temperature compensation: Yes

  • 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.