HANNA INSTRUMENTS HI 98127

Waterproof and designed to float Automatic Temperature Compensation Automatic calibration Tactile grip casings HOLD function Automatic shut-off Efficient two button operation Temperature in ° C or ° F BEPS ( Battery Error Prevention System) Battery % displayed at startup The pHep® 4 tester is for users that require the greatest accuracy and features while staying economical. This model has BEPS as well as user selectable automatic shut-off, replacable pH electrode cartridge, stability indicator and automatic calibration. Range pH -2.0 to 16.0 pH Temperature -5.0 to 60.0° C / 23.0 to 140.0° F Resolution pH 0.1 pH Temperature 0.1° C / 0.1° F Accuracy @ 20° C pH ± 0.1 pH Temperature ± 0.5° C / ± 1° F pH Calibration automatic, at one or two points with two sets of standard buffers ( pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18) Temperature Compensation Automatic Battery Type / Life 1.5V ( 4) / approximately 300 hours of continuous use; auto-off after 8 minutes of non-use Environment -5 to 50° C ( 23 to 122° F) ; RH max 100% Dimensions 163 x 40 x 26 mm ( 6.4 x 1.6 x 1.0" ) Weight 100 g ( 3.5 oz.)