Hanna Instruments HI96749 Cal Check Chromium VI Low Range Portable Photometer, 7-19/32" Length x 4-3/32" Width x 2-11/16" Height, 0 to 300 µg/L, 1 µg/L Resolution, LCD Display, 9V

At normal temperatures chromium is corrosion-resistant. For this reason, it plays an important role in the plating industry as well as cooling towers. In addition, it has certain qualities that make it useful in the production processes of the textile industry. The HI 96749 meter measures the hexavalent chromium (Cr VI) content in water and waste waters samples. The 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. HI 96749 is supplied with sample cuvettes with caps (2), 9V battery. 0 to 300 milligrams per liter range. 1 milligrams per liter resolution. +/-1 milligrams per liter +/-4 percent of reading at 25 degree C accuracy. Tungsten lamp light source. Light detection: silicon photocell with narrow band interference filter at the rate 525 nm. Battery type/life: 1 by 9V / approx. 40 Hours of continuous use; auto-off after 10 minutes of non use. Environment: 0 to 50 degree C (32 to 122 degree F); RH max 95 percent non-condensing. Measures 7-19/32" length by 4-3/32" width by 2-11/16" height. 360 g (12.7 oz) weight. Method: D1687-92, diphenylcarbohyzide method. The reaction between Cr VI and reagents causes a purple tint in the sample.