Radon Gas in Water Test Kit (rn-h2o) with Lab Analysis Included
Radon in water may contribute to the level of Radon in your air.
Testing the Radon level in your water is recommended if you have a private well.
Do-it-yourself testkit includes: boro-silicate glass collection vial, with a Teflon-faced silicone septa insert, easy to follow (illustrated) instructions & a pre-addressed return shipping package.
EPA CERTIFIED lab results are available online next business day (after
4.30pm eastern) of receiving them back in our lab -
click here for results
Download Instruction Sheet / Information Form
How to perform the test:
- Remove the aerator or filter from the faucet (if one is attached).
- Turn on cold water & allow it to flow until fresh water is drawn from
the well. This may take 10 minutes or longer. Water that has been sitting in
the pipes or holding tank may not have as much radon to measure, as fresh
water from the well.
- Slowly fill a clean bowl or deep pan with the spigot underwater if
possible. Minimize aeration and splashing.
- Remove the test-vial cap & submerge the vial and the cap open side up
until they fill with water. While the vial and cap are under water, screw
the cap back on tightly. Lift vial out of water and turn it upside down
check for air bubbles. If there is a bubble or an air space, repeat the
- Record the sample number(s) for your reference and ability to retrieve
results online. Online results are typically available within 24-48 hours of
the lab receiving the sample(s). Get Results at:
- Fill out data sheet with report to name, address, e-mail, test address,
vial number(s) and the date and time the sample(s) were collected. We cannot
calculate your result(s) without the sample collection date and time. Repack
the vial & information form in the shipping carton. Affix proper postage!
Samples must be returned within 8 days of ending the test.
If delivery of
your kit is lost or delayed, we will not be responsible for invalid results or
for a free replacement kit.
CT residents must return within 4 days.
Learn more about Radon (New window will open and take you to our Radon Information site)
Not available in New Jersey Click here for NJ test kits
In the laboratory, a measured aliquot of the water sample is mixed with scintillation cocktail in a glass test vial. Radon preferentially dissolves into the cocktail over period of several hours. The vial is then placed in a shielded chamber for counting. Alpha particles emitted by the breakdown products of Radon create scintillations, or flashes of light, in the cocktail.
A photo-multiplier tube detects these scintillation's, the signal is electronically enhanced and the effect of the alpha particles are counted. Background counts are subtracted and the net counts are entered into a formula with other relevant data yielding quantitative results stated in picoCuries per Liter (pCi/L).
ALL SALES ARE FINAL. No returns will be accepted for these items.