Range

 0.00 to 2.00 mg/L

 Resolution

 0.01 mg/L

 Accuracy

 ±0.11 mg/L ±5% of reading @ 25°C

 Light Source

 Tungsten lamp

 silicon photocell with narrow band interference filter @ 525nm

 Light Detection

 Battery Type / Life

 1 x 9V / approx. 40 hours of continuous use;

 auto-off after 10 minutes of non use

 Environment

 0 to 50°C (32 to 122°F); RH max 95% non-condensing

 Dimensions

 192 x 104 x 69 mm (7.6 x 4.1 x 2.7")

 Weight

 360 g (12.7 oz.)

 Method

 adaptation of the Standard Methods for the Examination of Water and Wastewater,

18th ed. EDTA colorimetric

 Solutions

 HI 93703-50

 Cuvette Cleaning Solution

 Accessories

 HI 731335

 Cuvette Cap for HI 957xx Series Meters

 HI 731318

 Cuvette Cleaning Cloth

 HI 731331

 Glass Cuvette Set

 Reagents & Standards

 HI 93719-01

 Hardness, Magnesium, EDTA Method (100 Tests)

 HI 93719-03

 Hardness, Magnesium, EDTA Method (300 Tests)