YSI DO200A

The YSI DO200A is a compact, handheld dissolved oxygen (DO) meter designed for reliable water quality monitoring in aquaculture, wastewater, surface water, and laboratory environments. Part of the trusted EcoSense range, the DO200A delivers fast response times and accurate readings in both % saturation and ppm (mg/L), making it a versatile tool for professionals who demand precision and ease of use.

This meter is engineered for both field and lab applications. It calibrates easily in a saturated air environment and supports salinity, pressure, and temperature compensation, ensuring high-quality data across diverse conditions. The DO200A is compatible with 4- or 10-metre cables, and can be paired with the 200-BOD self-stirring lab probe, transforming it into a true dual-purpose instrument.

The DO200A features screw-on PE membranes, which simplify membrane replacement and offer faster response times with reduced stirring dependence. Its rugged design includes an IP67 waterproof rating, low battery indicator, and automatic shutoff after 30 minutes of inactivity. With a 500-hour battery life and 50-set reviewable memory, it’s built for extended use in the field without compromising performance.

Replacing the older DO200 (blue model), the DO200A (grey model) offers improved usability and durability. Whether you’re monitoring oxygen levels in aquaculture tanks, testing surface water in the field, or conducting BOD analysis in the lab, the DO200A provides dependable results with minimal maintenance.