Hanna Instruments HI96720C Calcium Hardness ISM Standard Method Portable Photometer Kit

Calcium hardness standard method portable photometer kit. Kit includes photometer, 2 sample cuvettes with caps, 9V battery, 1 mL syringe with tip, cloth for wiping cuvettes, instrument quality certificate, instruction manual, rigid carrying case. 0.00 - 2.70 milligrams per liter range. 0.01 milligrams per liter resolution. +/-0.11 milligrams per liter (ppm) +/-5 percent of reading at 25 degree C accuracy. Tungsten lamp. Silicon photocell with narrow band interference filter at 525nm light detector. Adaptation of the standard methods for the examination of water and wastewater, 18th edition calmagite method. 0 To 50 degree C (32 to 122 degree F); RH maximum 95 percent non-condensing environment. 9V Battery. Auto-shut off: after ten minutes of non-use in measurement mode, after one hour of non-use in calibration mode, with last reading reminder.