Ohaus · Laboratory Instruments · Authorized Ohaus Dealer

Starter 300 pH Portable

Convenient Portable pH Meter for Wherever Your Work Takes You Display Liquid crystal display (LCD) Construction ABS housing, wrist strap Design Features Automatic and manual temperature compensation, auto buffer recognition, calibration icon Operation 4 AAA batteries (included)

3 modelsFree shippingOhaus warranty + Liberty support
from $408.99pick a model below
Choose your model3 models on Liberty

Call (661) 888-1919 for stock and lead time.

Models and prices

Liberty price on every model. Same item numbers as ohaus.com.

ModelItemCapacityReadabilityPlatform / panLegal for tradeLiberty price
Starter pH Portable ST300830339610.00-14.00 pH0.01 pH$546.99View
Starter pH Portable ST300-B830339620.00-14.00 pH±0.01 pH$408.99View
Starter pH Portable ST300-G302191140.00-14.00 pH±0.01 pH$572.99View

Details (from the Starter pH Portable ST300 listing; each model page carries its own)

Are you tired of inaccurate and time-consuming pH measurements in your field and lab work?


The Starter 300 pH Portable by Ohaus is here to revolutionize how you measure pH, bringing the accuracy and reliability of Liberty Scales to water analysis and laboratory tasks. With its advanced features tailored for laboratory instruments and rugged field use, this meter ensures precise and efficient measurements every time.

The Starter 300 pH Portable simplifies your measurement process with key features that offer supreme accuracy and user convenience.

Key Benefits:

  • Auto Buffer Recognition: Automatically recognizes four buffer groups, preventing calibration errors and saving time.
  • Automatic Temperature Compensation: Provides accurate pH readings under varying temperature conditions, eliminating the need for manual adjustments.
  • Durable Construction: Features IP54-rated ABS housing that resists water and dust, perfect for tough environments.
  • Convenient Data Management: Stores up to 30 measurements and allows quick recall of the last calibration data, optimizing your data handling.
  • User-Friendly Design: Equipped with a clear LCD and responsive controls for easy operation in any setting.
  • Portable and Ready to Use: Operates with four AAA batteries and includes a meter stand and wrist strap for secure field usage.
  • 5-Year Warranty: Enjoy peace of mind and long-term reliability with a comprehensive 5-year warranty on your investment.

When you choose the Starter 300 pH Portable, you’re not just getting a tool but investing in peace of mind. Imagine the confidence you'll feel with each accurate measurement, supported by a device as reliable in the lab as in the field. Your work will be smoother, quicker, and more precise, leaving you more time to focus on the real challenges of your research. With this portable pH meter, elevate your research and fieldwork to new heights, backed by the precision of Liberty Scales.

Reach out to our dedicated team for further information and personalized assistance. Call us at (661) 888-1919 or email us at sales@libertyscales.com. We're here to help you every step of the way!