HI 93703 Portable Logging Turbidity Meter ISO Compliant

Range 0.00 to 50.00 FTU; 50 to 1000 FTU Resolution 0.01 FTU ( 0.00 to 50.00 FTU) ; 1 FTU ( 50 to 1000 FTU) Accuracy ± 0.5 FTU or ± 5% of reading ( whichever is greater) Calibration 3 points ( 0 FTU, 10 FTU and 500 FTU) Light Source infrared LED Light Detection Silicon Photocell Battery Type / Life 1.5V AA ( 4) / approximately 60 hours of continuous use or 900 measurements; auto-off after 5 minutes of non-use Environment 0 to 50° C ( 32 to 122° F) ; RH max 95% non-condensing Dimensions 220 x 82 x 66 mm ( 8.7 x 3.2 x 2.6" ) Weight 510 g ( 1.1 lb.)