Hanna Instruments HI96719C Cal Check Mg Hardness Standard Method Portable Photometer Kit

This meter uses an exclusive positive-locking system to ensure that the cuvette is in the same position every time it is placed into the measurement cell. It is designed to fit cuvettes with a larger neck making it easier to add both sample and reagents. The cuvettes are made from special optical glass to obtain best results. User calibration. Certified calibration and verification standards. BEPS (battery error prevention system). Timer function. Auto shut-off. GLP Features. Range: 0.00 to 2.00 milligrams per liter. Resolution: 0.01 milligrams per liter. Accuracy: +/-0.11 milligrams per liter +/-5 percent of reading at 25 degree celsius. Light source: tungsten lamp. Light detection: silicon photocell with narrow band interference filter at 525nm. Battery type/life: 1 x 9V/approx. 40 hours of continuous use; auto-off after 10 minutes of non use. Environment: 0 to 50 degree celsius (32 to 122 degree fahrenheit); RH max 95 percent non-condensing. Measures 7-19/32" length by 4-3/32" width by 2-11/16" height. Method: adaptation of the standard methods for the examination of water and wastewater, 18th ed. EDTA colorimetric method.