Replacement Air Filters

Replacement filters for an NBC air filtration system

These replacement air filters are manufactured in the United Sates out of the highest quality materials. They are all easily replaced by using simple hand tools (two 9/16 or Crescent wrenches) and a suitable receptacle to place to old filters in. The Safe Cell manual has a detailed protocol for changing the filters.

Replacement pre-filters for an NBC air filtration system

Pre-Filters

The pre-filters are designed to extend the life of the HEPA filter by trapping both large and small particles. The first filter is the roughing filter with an average efficiency of 25 to 30 percent when tested in accordance with ASHRAE 52.1. The roughing filter extends the life of the intermediate filter or pre-filter and reduces its change frequency. The second filter is the intermediate filter with an average efficiency of 80 to 85 percent when tested in accordance with ASHRAE 52.1.

HEPA filter for an NBC air filtration system

The HEPA Filter

The nuclear grade HEPA filter is a special filter we have made just for our application. Each HEPA filter is individually tested to MIL-STD-282 before it leaves the factory, your assurance that it meets rated efficiency. The penetration and actual airflow rate are indicated on the label. Each filter is also assigned an individual serial number.

Testing – each filter is individually test by two methods:

PAO Test
This has been the industry standard for many years. It is conducted
using a forward light scattering photometer. The filter is challenged
with poly-alpha-olefin (PAO). By measuring the upstream and
downstream concentration, the filter efficiency can be calculated.

Laser Test
The filter is tested with a laser spectrometer using polystyrene
latex (PSL) spheres. Filter efficiency is determined by comparing
the upstream and downstream concentrations. Efficiencies down to
0.10 micrometers can be determined.

Underwriters Laboratories Classification UL 586: This classification to insure that each HEPA filter cell is individually tested at the factory. Additionally, representative HEPA filter cells are tested by UL to ensure that they provide their rated HEPA level filtration, after being subjected to the following conditions of a high moisture environment of (90% R.H.), a high temperature environment of (371 deg/C), low temperature environment of (-3 deg/C). UL also subjects the HEPA filter cell to a spot flame test of (954 deg/C).

  • Media: Water repellent glass micro fiber 99.97% True HEPA cell type (A)
  • Cell Side Material: Fire retardant particle board
  • Separators: Aluminum
  • Bond: Polyurethane foam
  • Gasket Material: Neoprene (RE43E1)
  • Gasket Location: Both sides
  • Factory Test: Certified 99.97% (DOP)
  • UL 866 Label: Required
Carbon adsorber for an NBC air filtration system

The carbon adsorber

The nuclear grade war gas adsorber is a block sieve adsorption filter cell consisting of two containment medias and a center block of granule nuclear grade war gas carbon called NUK-TK.

It is impregnated with both TEDA (triethylenediamine) and potassium iodide. In 1982, the U.S. Food and Drug Administration approved potassium iodide taken orally to protect thyroid glands from radioactive iodine. These are the “radiation pills” sold on prepper websites on up to Amazon. American Safe Room is the only NBC filter manufacturer that uses the carbon that has been impregnated with potassium iodide.

  • Critical standards that we meet or exceed:
    ASTM D 2854-1996: industry standard test method for apparent density of activated carbon
    ASTM D 2867-1999: industry standard test method for moisture in activated carbon
    ASTM D 3802-1997: industry standard test method for ball-pan hardness of activated carbon
    ASTM D 3467: activity for CCL – 60% minimum
    ASTM D 2862/D5158: particle size: 4X8 Mesh U.S.
    ASTM D 3838: pH aqueous extract – 9.2 minimum
    ASTM D 3466: ignition temperature 330C
    ASTM D 3803: radioactive iodine removal
    Impregnated with 2.1 Potassium iodide, 3.1% TEDA
    EA C 1704-1992: chemical research development and engineering center purchase

 

60 CFM – price, availability, and ordering

Complete set of filters for the 60 CFM Safe Cell

Complete set of filters for the 60 CFM Safe Cell
Part number: ASR-100-FIL
Price: $735, plus shipping
Availability: Stock item
Includes: One each pre-filter set, HEPA filter, carbon adsorber

Pre-filter set for the 60 CFM Safe Cell

Pre-filter set for the 60 CFM Safe Cell
Part number: ASR-100-PF
Price: $65, plus shipping
Availability: Stock item

HEPA filter for the 60 CFM Safe Cell

HEPA filter for the 60 CFM Safe Cell
Part number: ASR-100-HEPA
Price: $355, plus shipping
Availability: Stock item

Carbon adsorber for the 60 CFM Safe Cell

Carbon adsorber for the 60 CFM Safe Cell
Part number: ASR-100-CA
Price: $415, plus shipping
Availability: Stock item

 

  

120 CFM – price, availability, and ordering

Complete set of filters for the 120 CFM Safe Cell

Complete set of filters for the 120 CFM Safe Cell
Part number: ASR-200-FIL
Price: $1,455, plus shipping
Availability: Stock item
Includes: One each pre-filter set, HEPA filter, carbon adsorber

Pre-filter set for the 120 CFM Safe Cell

Pre-filter set for the 120 CFM Safe Cell
Part number: ASR-200-PF
Price: $95, plus shipping
Availability: Stock item

HEPA filter set for the 120 CFM Safe Cell

HEPA filter for the 120 CFM Safe Cell
Part number: ASR-200-HEPA
Price: $655, plus shipping
Availability: Stock item

Carbon adsorber for the 120 CFM Safe Cell

Carbon adsorber for the 120 CFM Safe Cell
Part number: ASR-200-CA
Price: $795, plus shipping
Availability: Stock item

 

  

How to order: contact our sales department