"Standard Test Procedure: Determination of o-Chlorobenzylidene Malononitrile (CS) Service Life Test: Air-Purifying Respirators."

This test establishes the procedure for ensuring that the level of protection provided by the o-Chlorobenzylidene malononitrile (CS) service life requirements on gas mask air-purifying respirators submitted for Approval, Extension of Approval, or examined during Certified Product Audits meet the certification requirements set forth in 42 CFR Part 84, Subpart G, Section 84.63(a)(c)(d) and Subpart I, Section 84.110; Volume 60, Number 110, June 8, 1995. This STP describes the Determination of CS Service Life Test, Air-Purifying Respirators test in sufficient detail that a person knowledgeable in the appropriate technical field can select equipment with the necessary resolution, conduct the test, and determine whether or not the product passes the test.

"Standard Test Procedure (STP): Determination of End-of-Service-Life Indicator (ESLI) Visibility Test: Air-Purifying Respirators"

This test establishes the procedure for ensuring that the level of protection provided by the end of service life indicator visibility test on respirators with permanent and replaceable ESLI requirements on air-purifying respirators submitted for Approval, Extension of Approval, or examined during Certified Product Audits, meet the minimum certification standards set forth in 42 CFR, Subpart G, Section 84.63(a)(c)(d); Volume 60, Number 110, June 8, 1995. This STP describes the Determination of End-of-Service-Life Indicator Visibility Test, Air-Purifying Respirators test in sufficient detail that a person knowledgeable in the appropriate technical field can select equipment with the necessary resolution, conduct the test, and determine whether or not the product passes the test

"Determination of Facepiece Carbon-Dioxide and Oxygen Concentration Levels - Tight Fitting: Powered Air-Purifying Respirators, With the Blower Unit Running, Standard Test Procedure (STP)"

This test establishes the procedures for ensuring that the facepiece concentration of carbon-dioxide and oxygen do not exceed or fall below respectively, established requirements on tight fitting, powered air-purifying respirators (PAPR) with a neck seal designed to offer personal protection against particulate and gas/vapor hazards with the blower running. The authority for this test is established at 42 CFR, Part 84, Subpart G, Section 84.63(a)(c)(d).

This procedure describes the “Determination of Facepiece Carbon-Dioxide and Oxygen Concentration Levels of Tight Fitting, Powered Air-Purifying Respirators with the Blower Unit Running” in sufficient detail that a person in the appropriate technical field can conduct the test and determine whether or not the performance of the product meets the established requirements.

"Standard Test Procedure (STP): Determination of Air Flow Resistance - Breath-Responsive: Powered Air-Purifying Respirators"

This test establishes the procedures for ensuring that the level of protection provided by breath responsive powered air-purifying respirators (PAPR’s) meets the requirements deemed as appropriate under 42 CFR 84.157 for air flow and breathing resistance. Breath responsive powered air-purifying respirators (PAPR’s) are designed to maintain a positive pressure in the facepiece in order to match the respiratory requirements of the user. The requirements for the evaluation of a PAPR under Part 84 do not address these design features. Therefore, in accordance with the applicable sections of 42 CFR § 84.60 and § 84.63, these types of PAPR’s will be evaluated under the requirements for PAPRs in 42 CFR Part 84 which are applicable to its design and under those additional requirements which NIOSH determines are necessary to ensure the quality, effectiveness and safety of the respirator. This STP describes the Determination of Breathing Resistance of Breath Responsive Powered Air-Purifying Respirators (PAPR’s) test in sufficient detail that a person knowledgeable in the appropriate technical field can select equipment with the necessary resolution, conduct the test, and determine whether or not the product passes the test.

"Standard Test Procedure (STP): Particulate Respirator Qualitative Fit Test Utilizing Saccharin or Bitrex Solutions"

This STP describes the Saccharin and Bitrex Fit Test in sufficient detail that a person knowledgeable in the appropriate technical field can select proper equipment, conduct the test, and determine whether or not the product passes the test. A Bitrex is a Denatonium benzoate solution. Bitrex is routinely used as a taste aversion agent in household liquids which children should not be drinking and is endorsed by the American Medical Association, the National Safety Council, and the American Association of Poison Control Centers. This test establishes the standard procedure for ensuring that the particulate respirators submitted for Approval, Extension of Approval, or examined during Approval Product audits meet fit test requirements established by policy and set forth in 42 CFR Part 84. Specifically for this test, the fitting ability of respirators may be determined for respirators which can not be tested using the isoamyl acetate fit test. Either Saccharin or Bitrex may be used. There is essentially no performance difference.