Used for the initial screening of a home for Radon gas.

How to Test:

If your home has a basement, open and place the canister anywhere in the basement. Do not place the canister in a garage, root cellar, crawl space or sump pump pit. If your house does not have a basement, place the open canister in the lowest livable level of your home in any room except the bathroom, kitchen, laundry room or porch. If testing more than one area of your home, place the other canister in a frequently used living area.

Do not expose the canister to noticeable drafts such as near a window, fireplace or open door. Canister should be placed at least 2 feet above the floor, at least 1 foot away from exterior walls, at least 4 inches away from other objects and at least 3 feet away from windows, doors or other openings. Do not place in cupboard, closet, drawer, etc. Canister should be exposed to the air people breathe.