The cost of an Arsenic Quick Test Kit varies depending upon the levels of detection required for the testing and the number of tests in the kit. For a school project we think something like the Arsenic Quick 5's Kit may work well since it will allow your daughter to test 5 different samples of water and it typically provides an adequate detection range for most residential water sources.

On the matter of testing foods for arsenic, we do not have much information to share because we have not tried an experiments using foods. In theory the kits should work using food in the same manner as they do wood but a few potential problems come to mind:

1) There's no way to determine the expected arsenic levels in other materials so the kit may lack the appropriate detection range to pick up traces of arsenic if present.

2) Since the Arsenic Quick Test Kits rely on test pad areas that change color to indicate concentrations of arsenic in samples, violent reactions where colored samples splatter up on test pad areas would invalidate any results obtained.

For additional (or more detailed) information on the Arsenic Quick Test Kits and their capabilities, feel free to contact us, again, or you may always contact the manufacturer directly (Industrial Test Systems, Inc.).

Thank you for contacting the Water Testing Blog, Yulia. We know that the Arsenic Quick Test Kit can test for dissolved arsenic in wood (wood shavings/chips in water) since the test pad itself does not actually get immersed in the sample. Therefore we suspect that one could use the test kit on pretty much any ‘liquid’ — sort of.

Hypothetically, if one performed a test on the same amount (i.e. mass or weight) of formula as called out for wood in the test procedure for testing arsenic levels in wood, then logically the results obtained ought to have some level of validity.

Keep in mind, though, that deviating from ANY test procedure inherently introduces elements of inaccuracy when it comes to the test’s results… and therefore one should take ‘positive’ results as a sign that additional (i.e. laboratory) testing should get performed using methodology specifically designed for the testing of dissolved arsenic levels in food substances.