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Introducing the Ohaus Starter DO Portable ST400D-G, the ultimate solution for accurate and convenient Dissolved Oxygen (DO) measurement.

With its advanced features and user-friendly design, this portable device is a must-have for field and lab applications.

The ST400D-G features an optical DO probe that requires minimal maintenance, providing immediate measurement readings. Say goodbye to lengthy warm-up periods and sample preparation - this state-of-the-art probe delivers instant results, saving you valuable time and effort.

Designed for optimal usability, the large backlit LCD screen ensures easy reading of results, even in low-light environments. Whether you're working in the field or the lab, this device guarantees clear and concise data at all times. And with its durable IP54 housing, it's built to withstand the rigors of secure field use.

But that's not all - the ST400D-G goes above and beyond with its 99-measurement library. This innovative feature allows you to store data for future reference, ensuring seamless record-keeping and analysis. Plus, with the simple one-touch recall function, accessing your last calibration data has always been challenging.

Operating on 4 AAA batteries (included), this portable device enables hassle-free usage on the go. Its ABS housing provides durability and reliability, ensuring long-lasting performance in any setting.

From its convenient design features, like auto barometric pressure measurement to its automatic temperature compensation with manual salinity compensation, the ST400D-G is engineered to simplify your DO measurement process.

Incorporating cutting-edge technology and a user-centric design, the Ohaus Starter DO Portable ST400D-G sets a new standard in Dissolved Oxygen measurement. Whether you're conducting experiments in the lab or performing tests in the field, this device offers unparalleled accuracy and convenience.

Get your hands on the ST400D-G today and experience the future of DO measurement.

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 for queries or concerns about shipping.