The Plas-Labs oxygen analyzer monitors oxygen levels and is useful in all Plas-labs glove boxes for general isolation applications in chemical pharmaceutical biotech and waste management laboratories.SpecificationsDissolved Oxygen Range 0-100.0 ppmConcentration in Air Range 0-100%Accuracy DO /- 0.25 ppm. Air /- 1%Precision /- 0.1%Hysteresis Non-existentResponse Time 90% of final reading in 30 secondsZero True zero in the absence of oxygenPressure 25 psi maximum 60 ft. depth in waterSwitch OFF - % - ppmDisplay 1/2 in. LCDSize 6.00 in. L x 1.55 in. W x 3.70 in. H