Skip to content
FREE SHIPPING FOR ALL PRODUCTS WITHIN THE CONTINENTAL UNITED STATES!
FREE SHIPPING FOR ALL PRODUCTS WITHIN THE CONTINENTAL UNITED STATES!

Introducing the Ohaus Starter DO Portable ST400D-B, the ultimate solution for accurate and hassle-free Dissolved Oxygen (DO) measurement in the field and lab.


With its innovative features and user-friendly design, this portable device is a must-have for any professional seeking precise results.

The ST400D-B comes equipped with an optical DO probe, which requires minimal maintenance and provides immediate measurement readings. Say goodbye to tedious warm-up times and sample preparation – this cutting-edge technology allows you to get instant results, saving you valuable time and effort.

Featuring a large backlit LCD screen, this device ensures easy readability even in low-light environments. No need to squint or strain your eyes – the crystal-clear display presents your measurements with utmost clarity. Whether you're working outdoors or under dim lighting conditions, this feature guarantees optimal visibility.

Engineered for durability and convenience, the ST400D-B is designed with a sturdy IP54 housing, making it ideal for secure field use. It also comes with a meter stand and wrist strap, allowing you to work hands-free without the worry of dropping or damaging your equipment. This device is built to withstand the rigors of demanding environments, ensuring reliable performance wherever you go.

One of the standout features of the ST400D-B is its 99-measurement library. This invaluable resource allows you to store data for future reference and easily recall previous calibration information with just one touch. Say goodbye to manual record-keeping and tedious data retrieval – this device streamlines your workflow and maximizes efficiency.

Powered by four AAA batteries (included), this portable device offers unparalleled convenience. No need to worry about finding an electrical outlet or being tethered to a power source – replace the batteries when needed and continue your work uninterrupted.

Constructed with durable ABS housing, the ST400D-B is built to withstand daily wear and tear. It also boasts additional design features such as auto barometric pressure measurement, auto temperature compensation, and manual salinity compensation, ensuring accurate and precise results every time.

Choose the Ohaus Starter DO Portable ST400D-B for your Dissolved Oxygen measurement needs. With its advanced features, user-friendly design, and reliable performance, this device is the perfect companion for professionals in the field and lab.

Don't settle for anything less than excellence – invest in the ST400D-B and experience the difference it makes in your work.

5-year limited warranty

  • 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 sales@libertyscales.com for queries or concerns about shipping.