Arsenic Field Test Kit
Ltek system offers two types of field test kits for determination of arsenic in ground water. Both the kits are simple to use, economical and reliable and based on the “Gutzeit” method.
Kit based on NEERI’s know how: arsenic field test kit water sample is treated with a reducing agent that liberates the arsenic compound in water into arsenic trihydride (arsine gas AsH3). Arsenic trihydride diffuses out of the sample where it is exposed to a paper impregnated with mercuric bromide. Reaction with the paper produces a highly colored compound. By comparing the color of the test strip to a color scale provided with the kit, the amount of arsenic in a sample can be estimated.
Kit based on UNICEF-NCL know how: Ltek Systems offers this test kit in co-operation with Chem-in –Corporation. Arsenic test kit require 10minutes and employ detection tube. Inorganic As+3 and As+5 are converted to arsine gas. This reacts with the detection tube fixed on to the mouth of closed container and produces pink color. The developed color in detector tube is proportional to the amount of arsenic present. Kit detects arsenic levels upwards of 5 ppb.
Method: Photometric Method-“Gutzeit” method
Type: Visual color comparison
Range: Upwards of 5 ppb