Returning the Completed Radon Gas Test Device for Processing.

Thank you for choosing Inspect USA for your radon gas test kits.

Feel free to return the canisters or vials by any carrier of your choice. You can use any appropriate type of package approved by the carrier as well. Inspect USA will typically provide one U.S. Postal Service Priority Flat Rate envelope (postage not included) & one instruction sheet with information form attached, per order. Additional mailers are available from the U.S. Postal Service free of charge ( PDF versions of the instruction/info sheets are available to download at or request a copy by e-mail [email protected].

Very Important ->Deadline: Short term & radon in water test devices must be received by the lab within 8 days (on a business day) or the test is invalid. Note: In Connecticut, water test vials must be returned within 4 days.

1st Class Mail Delivery is Not Guaranteed:
Most test kits sent via 1st Class Mail arrive within 3-5 days. If you need guaranteed delivery, it is recommended that you send your kit via FEDEX or UPS Next Day Service. We have found that USPS Express mail is not as reliable.

For Short term Liquid Scintillation Radon Gas in Air Test Kits and Radon Gas in Water Test Kits: results are typically available by 4 PM Eastern time that next business day after the lab receives them. For example if we receive the package on Tuesday results will be available Wednesday 4 PM; if we receive them Friday, results will be available Monday 4 PM.

For Inspect USA 4″ Canisters: results are typically available by 4 PM Eastern the same day we receive them when they are received at the physical address prior to 11AM eastern. It is recommended to use either UPS or Fedex Next Day Service to be assured the canisters arrive by 11AM. For canisters that arrive after 11AM eastern, results will be available that next business day after the lab receives them. For example if we receive the package on Tuesday after 11AM, results will be available Wednesday by 4 PM; if we receive them Friday before 11AM results will be available the same day by 4PM eastern. If canisters are received Friday after 11AM, results will be available Monday 4 PM.

Results are emailed as they’re available throughout the day. Please be sure to print legibly (or complete the form using Adobe Acrobat) to avoid a delay in receiving your results. Forms are available at: Results are available at You will need the device serial number and the test-site zip code (when the datasheet is completed properly) in order to view and or print your results.

IMPORTANT: the lab must receive your completed radon test canister or vial within eight calendar days. Anything beyond that cannot be analyzed and would be considered invalid. We cannot be responsible for invalid results or for a free replacement test kit.

When using the enclosed envelope, be sure to add the appropriate Priority Mail Postage.

Please note: Long Term Radon Gas in air Test Kits take approximately 3 weeks for results.

Safe Smoke Testing for Leaks in Sewer, Plumbing and Storage Tanks

Make A Smoke Pump for Leak Testing Converting A Shop Vacuum Cleaner

I get this question many times per week. Can we drop the smoke emitter in the plumbing line and locate leaks. The long and short answer is, “No”. Many sewer lines have methane in them which is extremely flammable and explosive.

IMPORTANT: Do not put a lit device into or even near, an open drain line that is connected to the sewer line or septic system. Methane is a result of or a by-product of, the waste disposal process. Yes, it is the same methane used to heat homes, cook meals etc, otherwise called Natural Gas. It is very explosive and stays low to the ground where you are working since it is heavier than air. Just a spark could ignite the leaked gas and have catastrophic results. For better and safer results use a Smoke Pump. With this method, one would burn the smoke emitter in a contained area and then pump the smoke into the duct, tank, pipe or any enclosed space to find leaks. The smoke itself is not flammable or dangerous to deliver via this method.

To make your own smoke pump most shop vacs will work, however a metal one would be my recommendation for added safety. If you want to control the pressure via the fan speed you will want to use a rheostat on the line so you can control the speed of the motor.

There are many models of smoke pumps available on the market, however they are all rather expensive and decent ones start in the thousands. For a tool that you may only use once in a while, it just may not be the right investment for you at this time. Good news is that with a little ingenuity and imagination you can build your own. I believe that if you are a person that will smoke test a plumbing stack than you must be a person that would have the ability to put something like this together, with a bit of thought. Here a few ideas to help stimulate your own plan. Build your own smoke pump from what you may have around the house or shop.

This concept works around a shop vacuum cleaner or otherwise called a shop-vac and a few other items. Basic steps to prepare the vacuum to be used as a smoke pump.

  1. Empty the debris and remove any potentially flammable dust or fragments left behind.
  2. Drill or punch many 1/8″ holes around the circumference of the can and lid. This will allow the smoke to go through the can without the ash residue.
  3. Remove the filter from the shop vac since it would filter out the smoke we are trying to deliver.
  4. Place the perforated can into the shop vac.
  5. Following the instructions; light a smoke emitter, place it into the metal can and replace the lid back on the can.
  6. Close the shop vac lid.
  7. Move the hose from the suction side onto the exhaust side.

You now have an air pump. With a few additional items and steps we can turn this into a smoke pump.

Supplies needed:

  • A clean or new metal can with lid (just like a paint can). Be careful some of the newer cans have plastic bottoms, select a 100% metal can. I prefer a 128 ounce (gallon) can, which typically measures about 10″ tall x 9″ diameter. However this size may not fit in your vacuum. In that instance and really only for the S103 and S102 size smoke bombs, one could use a 64 ounce (half gallon) can, which typically measures about 6″ tall by 5.5″ in diameter.
  • 2″ gaffers tape (or duct tape if you do not mind the tacky residue it leaves behind)
  • A Fernco (rubber coupling) to attach the hose to your plumbing stack


  • Rheostat on the line so you can control the speed of the motor (when testing a drain line with a sink in it is important to monitor the motor speed because too much pressure will compromise the fluid in the traps allowing the smoke to escape and result in a failed test).

Use white or FP smoke to avoid residue .