Water analysis kit in case for oxygen

The ECO 531 is a rugged and portable meter for the precise measurement of dissolved oxygen in water—displayed directly in mg/L (ppm) or saturation percentage, without the need for conversion tables.

Ideal for aquariums, aquaculture, fisheries, and well and water body measurements.

Product Highlights:

Waterproof and rugged (IP65/IP67) for lab and field use

Galvanic sensor with temperature compensation for precise readings

Easy calibration: Adjustment to ambient air at the touch of a button

Backlit 3-line display with overhead view, hold, and min/max functions

Long battery life: 2x AA, energy-saving with configurable shutdown

Protection and maintenance:

Membrane cap for sensor protection available as an option

Measuring range and accuracy:

Oxygen concentration: 0.0–20.0 mg/L (ppm), ±0.2 mg/L or ±1.5%

MW saturation: 0–200%, ±2% MW

Response time: t95 approx. 10 s

Technical Specifications:

Housing: impact-resistant ABS, polyester front panel

Dimensions: 108 x 54 x 28 mm, Weight: approx. 240 g

Sensor: permanently attached, 2 m or 4 m cable, max. 3 bar (up to 30 m water depth)

Operating temperature: 0–40 °C (recommended 5–30 °C), relative humidity: 0–95%

Power consumption: <1 mA, battery life >3000 h continuous operation

Scope of delivery:

ECO 531 handheld meter with sensor

Spare membrane cap and electrolyte

2x AA batteries

User manual

This oxygen meter can also be ordered as part of a set with our pH/ORP meter in a protective case! (Item No. 131470)