Ohaus Starter ST400D-G Portable Dissolved Oxygen (DO) Meter Kit

Ohaus Starter ST400D-G Portable Dissolved Oxygen (DO) Meter Kit with STDO21 Probe

Advanced Optical Technology for Hassle-Free DO Measurement

The Ohaus Starter ST400D DO (Dissolved Oxygen) Portable Meter delivers high-performance dissolved oxygen measurement with innovative optical technology that eliminates the maintenance hassles of traditional membrane-based DO probes. Leveraging over a century of OHAUS measurement expertise, the ST400D provides immediate, accurate readings without warm-up time or sample preparation, making it the ideal solution for professionals who need reliable DO data in field and laboratory environments. The optical probe technology requires minimal maintenance while delivering consistent accuracy across a measurement range of 0.00 to 20.0 mg/L (ppm), with precision of ±0.2 mg/L for readings below 8 mg/L.

Rugged Field-Ready Design with Intelligent Data Management

Designed for practical field use, the ST400D features a large backlit color LCD screen that ensures easy readability even in low-light conditions, while the durable IP54-rated ABS housing protects against dust and water splashes. The meter includes convenient accessories such as a meter stand and wrist strap for secure handling during field work. Powered by four AAA batteries providing 12 hours of continuous operation, the ST400D offers automatic temperature compensation with manual salinity adjustment and auto barometric pressure measurement for enhanced accuracy. The built-in 99-measurement memory library stores data for future reference, and one-touch recall of the last calibration data simplifies quality control procedures in the field.

Features of Ohaus ST400D Portable (DO) Meter:

• One Year Warranty for piece of mind.
• Optical DO Technology - Advanced optical sensor eliminates membrane maintenance and provides instant readings without warm-up time or sample preparation.
• Low Maintenance Design - Optical probe requires minimal upkeep compared to traditional electrochemical DO sensors, reducing downtime and operational costs.
• High Accuracy Performance - Delivers ±0.2 mg/L accuracy for readings below 8 mg/L and ±0.3 mg/L for 8-20 mg/L range, with ±0.3°C temperature accuracy.
• Large Backlit Color LCD - Easy-to-read color graphics display ensures excellent visibility in all lighting conditions, including challenging field environments.
• Durable IP54 Housing - Dust and splash-resistant ABS construction protects the meter during field use in various environmental conditions.
• 99-Measurement Memory - Built-in data storage library allows you to save and review measurement data for documentation and trend analysis.
• One-Touch Calibration Recall - Quickly access the last calibration data to verify meter performance and maintain quality assurance protocols.
• Automatic Compensation Features - Auto temperature compensation and auto barometric pressure measurement with manual salinity adjustment ensure accurate DO readings.
• Portable Battery Operation - Runs on four standard AAA batteries (included) providing 12 hours of continuous use for extended field sessions.
• Complete Field Kit - Includes meter stand and wrist strap for secure, hands-free operation during sampling and testing procedures.

Applications for Ohaus ST400D Portable (DO) Meter:

The Starter ST400D is ideal for:

• Environmental water quality monitoring.
• Aquaculture and fisheries management.
• Wastewater treatment process control.
• Stream and lake ecological studies.
• Laboratory dissolved oxygen analysis.
• Field research and educational applications.

Ohaus ST400D-G Kit Includes:

Starter 400D Optical DO Meter, 4 x AAA Batteries, STDO21 Optical DO Probe (RDO), Luminescence Cap/Sensor Element (required for measurement), Electrode Clip, Wrist Strap, IP54 Protection Seals, and Portable Carrying Bag.

Need Help? Call 1300 812 450

Specifications 

Specifications for the Ohaus Starter 400D DO Portable Meter

Need Help? Call 1300 812 450

Downloads

Ohaus Starter ST400D Portable DO Meter Manual 

  Owner's Manual                                                                                                   Product Datasheet

Ohaus Starter 400D Portable DO Meter - Manual PDF              Ohaus Starter 400D Portable DO Meter - Datasheet PDF

  Product Brochure

Ohaus Water Analysis and Electrodes - Brochure PDF