MIL --- PRF --- 51527B
3.5.2 Moisture content. Prior to packaging the gas filter in a sealed container, the moisture
content of the carbon shall not exceed 3.0 percent by weight to enhance shelf life.
3.5.3 Safety, health, environment.
3.5.3.1 Materials. The materials of construction shall be non --- toxic, non --- hazardous, and
non --- carcinogenic. They shall not be capable of having any adverse effects on human health
during normal use. If special use conditions create a health hazard potential, the equipment
shall have appropriate hazard warning labels in accordance with 29 CFR 1910.1200.
3.5.3.2 Particulate emissions. The filter set shall pose no potential inhalation hazard to the
user, and whose normal use will not exceed the lower of (a) 8 --- hour time weighted average
Threshold Limit Values (TLVs) published by the American Conference of Governmental In-
dustrial Hygienists (ACGIH), or (b) 8 --- hour time weighted average Permissible Exposure Lim-
its (PELs) regulated by Occupational Safety and Health Administration (OSHA) and found in
Material Safety Data Sheets (MSDS) (see 6.7).
3.5.3.3 Odors. When air is forced through the filter at 200 scfm, filter set shall not emit an
irritating level of particulate emissions or obnoxious odors.
3.5.3.4 Hazardous waste. At the time of disposal, uncontaminated filter sets (including any
coatings) shall not be a Resource Conservation Recovery Act hazardous waste according to
characteristics cited in 40 CFR 261.21 --- 261.24 and shall not be listed as specific hazardous
waste chemicals in 40 CFR 261.33(e) and (f).
3.5.3.5 Sharp edges. Filter sets shall be free from burrs and sharp edges that might injure
personnel, damage filter media, or damage Mission Oriented Protective Posture (MOPP) IV
gloves during handling.
3.5.4 Identification markings. All markings shall be accessible, legible and permanent.
a. The gas filter shall contain markings on the outside surface which include the name
"FILTER, GAS, 200 CFM", contract number, lot number, serial number, national stock number,
cage code, manufacturer's name, and manufacture date. Letters shall be at least 0.2 inch high.
b. The particulate filter shall contain markings on the outside surface which include the
name "FILTER, PARTICULATE, 200 CFM", contract number, lot number, serial number, national
stock number, cage code, manufacturer's name, and manufacture date. Letters shall be at least 0.2
inch high.
c. Each filter shall also contain a barcode from which the following may be read: name,
contract number, lot number, serial number, national stock number, cage code, manufacturer's part
number, manufacture date, expiration date, and measured airflow resistance and penetration per-
cent. Barcode dimensions and characteristics shall comply with MIL- STD- 130.
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