Hanna Instruments HI-7040L Buffer Solution, 460 ml, Bottle

Waterproof Dissolved Oxygen Meter - HI 9142

• Measurement range of 0.0 to 19.9 mg/L
• Quick and accurate readings
• Waterproof & rugged casing, ideal for field use in potentially harsh conditions
• One point calibration - can be calibrated in saturated air without the need for chemical solutions
• Built-in ATC (Automatic Temperature Compensation) circuitry which adjusts all readings to ensure consistent, high measurement accuracy
• Precise polarographic probe with a 4m cable for hard to reach places (included)
• Low battery indicator

• Also available is a 460ml bottle of zero oxygen solution, required for regular calibration and re-setting of the meter

Supplied with

DO probe with 4m cable, 2 spare membranes, HI 7041S electrolyte solution, 4 x 1.5V AA batteries, rugged carrying case, instruction manual.