In an effort to limit community transmission of COVID-19, RSSI is reducing in-office staff time.  RSSI is still open for business, but as a result of the reduced staffing, turn-around times for responses, order fulfillment, lab analyses, and instrument calibrations may increase.

 

Technical Information

RSSI Radon Certifications:

AT-101 Alpha-track Device Specifications:

  • Manufacturer: RSSI

  • Model number: AT-101

  • Internal chamber volume = 175 mL

  • Track reading area = 159.52 mm2

  • Test duration = 8 days to 1 year (Note: RSSI does not recommend test durations shorter than 30 days.)

  • Maximum Minimum Detectable Exposure

    • 10.7 pCi-days/L (397 Bq-days/m3)

  • Maximum Minimum Detectable Concentrations

    • 1.3 pCi/L for 8-day test (50 Bq/m3)

    • 0.9 pCi/L for 12-day test (33 Bq/m3)

    • 0.4 pCi/L for 30-day test (13 Bq/m3)

    • 0.1 pCi/L for 90-day test (4 Bq/m3)

  • Typical Minimum Detectable Exposure

    • 6.0 pCi-days/L (178 Bq-days/m3)

  • Typical Minimum Detectable Concentrations

    • 0.8 pCi/L for 8-day test (28 Bq/m3)

    • 0.5 pCi/L for 12-day test (19 Bq/m3)

    • 0.2 pCi/L for 30-day test (7 Bq/m3)

    • 0.1 pCi/L for 90-day test (3 Bq/m3)

  • Rounding:

    • < 0.1 pCi/L is rounded to 0.1 pCi/L

    • > 0.1 pCi/L is rounded to one decimal place

    • Bq-days/m3 and Bq/m3 are rounded to the nearest integer

 

AT-102 Alpha-track Device Specifications:

  • Manufacturer: RSSI

  • Model number: AT-102

  • Internal chamber volume = 32 mL

  • Track reading area = 159.52 mm2

  • Test duration = 30 days to 1 year

  • Maximum Minimum Detectable Exposure

    • 18.8 pCi-days/L (695 Bq-days/m3)

  • Maximum Minimum Detectable Concentrations

    • 0.6 pCi/L for 30-day test (23 Bq/m3)

    • 0.2 pCi/L for 90-day test (8 Bq/m3)

  • Typical Minimum Detectable Exposure

    • 10.6 pCi-days/L (390 Bq-days/m3)

  • Typical Minimum Detectable Concentrations

    • 0.4 pCi/L for 30-day test (13 Bq/m3)

    • 0.1 pCi/L for 90-day test (4 Bq/m3)

  • Rounding:

    • < 0.1 pCi/L is rounded to 0.1 pCi/L

    • > 0.1 pCi/L is rounded to one decimal place

    • Bq-days/m3 and Bq/m3 are rounded to the nearest integer

 

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