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EPERM® is C-NRPP Listed
E-PERM incorporates electret ion chamber technology
E-PERM is tested, accepted, listed by the NRPP, and is internationally recognized as the state-of-the-art technology in the radon measurement industry.
E-PERMs have been popular for many years. In fact, 94% of all of the 1989 EPA RMP Round 6 E-PERM entries passed; more so than any other technology.
E-PERM Performance is Unsurpassed
System error is less than 8%
E-PERM is a true radon integrating method, able to accurately follow any variation in radon concentration with excellent precision.
E-PERM is not affected by humidity or normal temperature variations.
E-PERM is the most popular method for radon testing. New users are added every week.
The E-PERM System is Versatile
The simplicity of operating the E-PERM System is unique to electret-ion chamber technology
E-PERM performs both short-term and long-term measurements. Ion chambers and measurement equipment perform identically in either case.
By selecting the appropriate ion chamber and electret type, E-PERM detectors can be deployed from two to 400 days as shown in the table.
ION CHAMBER TYPE
2 - 10
14 - 90
14 - 90
45 - 180
21 - 120
150 - 450
150 - 450
Measurement results can be determined in the field or on-site.
E-PERMs can provide accurate screening measurements within two days. The length of exposure is not limited; the longer the exposure, the better the representation of the average radon level over time.
School personnel can be trained to assist in testing the facilities, or in developing programs to perform the entire testing activity with an in-house E-PERM System. E-PERM is the only technology to offer the options of partial or complete in-house measurement capabilities.
E-PERM is Cost Competitive
- The measurement costs will vary with the number of tests, which are a function of the test duration and radon level. E-PERM costs less per measurement than any testing methods.
E-PERM is more than competitive because its accuracy and efficiency.
There are many excellent radon measurement and engineering firms who specify E-PERM as their choice for accurate, cost effective surveys.
E-PERM is specified in many competitive tenders throughout the world.
"Decision Maker Fact Sheet"
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