What forms of arsenic do the arsenic test kits measure?
Arsenic forms measured by test kits Arsenic, Low Range Test Kit and EZ-Arsenic high range
The arsenic test kits Arsenic, Low Range Test Kit (Product # 2800000) and EZ Arsenic, High Range Test Kit (Product # 2822800) measure inorganic arsenic in the +3 and +5 oxidation states. Not detected are organic arsenic compounds, such as dimethylarsenic acid. To measure total arsenic, including inorganic and organic arsenic, the Arsenic, low range test kit instructions include information on digesting the sample; digested results would include organic arsenic. Please see the manual on the Hach website for more information.