The charcoal canisters are 4" open face canisters.
They consist of a metal canister filled with activated
charcoal that is held in place by a wire mesh screen and
spring clip. The radon gas and some of the progeny, if
present in the air, attach to the charcoal surface. The
canister is sealed at the end of the testing period, and
returned to the laboratory for processing and analysis.
For counting, the sealed canister is placed in a sodium
iodide counting system for ten minutes. After analysis,
the gamma counts are converted to radon gas concentrations.
The exposure period of our charcoal canister consists of a
minimum of 48 hours (2 days) to a maximum exposure period of 144 hours (6 days).
Due to licensing, cannot be used in West Virginia
There is an additional $9.50 charge for tests done in the State of
New Jersey, and a $3.00 additional fee for the State of New York.
NJ Home Inspectors who are licensed cannot buy unless they are
affiliated with RAData’s lab.