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E-PERM® System for Radon Testing

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Electret Ion Chamber Technology  Decision Maker Fact Sheet

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 Sper 1 Reader
 
S
S ION  CHAMBER
L
L-OO
L-OO ION CHAMBER
H
ELECTRET
TYPE
H ION CHAMBER
 
ST

ST ELECTRET

2 Days

2 - 10
14 - 90
14 - 90

MT

ST ELECTRET

45 - 180

LT

LT ELECTRET

4 - 14

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" (Pdf Version) Adobe pdf file

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