air-purifying respirator with loose-fitting hood or helmet. They shall meet the minimum requirements of § 84.1149. $84.1153 Dust, fume, mist, and smoke tests; canister bench tests; gas masks canisters containing filters; minimum requirements.

(a) Gas mask canisters containing filters for protection against dusts, fumes, mists, and smokes in combination with gases, vapors, or gases and vapors, will be tested as prescribed in §84.1140 except for the breathing resistance which will be in accordance with §84.122.

(b) Gas mask canisters designed for protection against smokes will be tested in an atmospheric concentration of 100 micrograms of dioctyl phthalate per liter of air at continuous flow rates of 32 liters per minute and 85 liters per minute for a period of 5 to 10 seconds, and the DOP leakage through the canister shall not exceed 0.03 percent of the test concentration.

(c) Gas mask canisters containing filters for protection against dusts, fumes, mists, and smokes in combination with gases, vapors, or gases and vapors, will be tested as prescribed in §84.126.

$84.1154 Canister and cartridge requirements.

(a) Where two or more canisters or cartridges are used in parallel, their resistance to airflow shall be essentially equal.

(b) The color and markings of all canisters and cartridges or labels shall conform with the requirements of the American National Standards Institute, American National Standard for Identification of Air-Purifying Respirator Canisters and Cartridges, ANSI K13.1-1973. ANSI K13.1 is incorporated

by reference and has been apƒthe Director of the Federal Re accordance with 5 U.S.C. 552 CFR part 51. Copies may be from American National Stan stitute, Inc., 1430 Broadway, No NY 10018. Copies may be insp the NIOSH, Certification and Assurance Branch, 1095 Wi Road, Morgantown, WV 26505 at the Office of the Federal } 800 North Capitol Street, NV 700, Washington, DC.

$84.1155 Filters used with c and cartridges; location; ment.

(a) Particulate matter filters conjunction with a canister tridge shall be located on the in` of the canister or cartridge.

(b) Filters shall be incorporat or firmly attached to the cani cartridge and each filter as shall, where applicable, be desig permit its easy removal from a placement on the canister or car

$84.1156 Pesticide respirators

formance requirements; gene Pesticide respirators and the ir ual components of each such shall, as appropriate, meet the f ing minimum requirements for formance and protection:

(a) Breathing resistance test. (1) flow resistance will be measured facepiece, mouthpiece, hood, or h of a pesticide respirator mounted test fixture with air flowing at a tinuous rate of 85 liters per mi both before and after each test ducted in accordance with paragr (c) and (f) of this section.

(2) The maximum allowable re ance requirements for pesticide pirators are as follows:

N

Type of pesticide respirator

Front-or back-mounted gas mask

Chin-style gas mask

Powered air-purifying 2

Chemical Cartridge

Ed Service, HHS

ve test. (1) The complete Crespirator will be fitted to A) arks of persons having varying faocates and sizes.

dard her the applicant specifies a
e Inne sise or sizes for his respirator
Der with the approximate meas-
Q of faces they are designed to
Institute will provide test sub-
mit such facial measurements.
Rey pesticide respirator part

st be removed to perform the
e fit test shall be replaceable
special tools and without dis-
acepiece fit.

The facepiece or mouthpiece fit positive or negative pressure ded by the applicant and dehis instructions will be used ach test.

Bach wearer will enter a chamYontaining 1,000 p.p.m. isoamyl-acepor for a respirator equipped full facepiece, mouthpiece, helmet and 100 p.p.m. isoamyle vapor for a respirator equipped half-mask facepiece.

The facepiece, mouthpiece, hood, met may be adjusted, if necin the test chamber before fing the test.

Each wearer will remain in the er while performing the followvities:

ments;

minutes, nodding and turn

minutes, calisthenic arm

back-mounted,

(2) The test aerosol will contain 15-20 milligrams of freshly generated leadoxide fume, calculated as lead, per cubic meter of air.

(3) The fume will be generated by impinging an oxygen-gas flame on molten lead.

(4) Front-mounted, back-mounted, and chin-style gas mask pesticide respirators and chemical cartridge pesticide respirators will be tested for 90 minutes and powered air-purifying pesticide respirators will be tested for 4 hours.

(5) The total amount of unretained test suspension, which is analyzed and calculated as lead, shall not exceed

(1) 0.43 milligram for any 90 minute test;

(11) 4.8 milligrams for any 4 hour test made at 115 liters (4 cubic feet) DO minute; or

(iii) 6.2 milligrams for any 4 h
made at 170 liters (6
minute.

(e) Dioctyl-phthalate test. (1) All canisters submitted for use with frontmounted and back-mounted gas mask pesticide respirators will be tested in an atmospheric concentration of 100 micrograms of dioctyl-phthalate per liter of air at continuous flow rates of 32 and 85 liters per minute for a test period of 5 to 10 seconds.

(2) The DOP leakage through the canister shall not exceed 0.03 percent of the ambient DOP concentration.

(f) Bench tests for pesticide respirators. (1)(i) Bench tests will be made on an apparatus that allows the test atmosphere at 50±5 percent relative humidity and at room temperature (25o±2.5° C.) to enter the canister or cartridge at predetermined concentrations and rates of flow, and that has a means for determining the test life of the canister or cartridge against carbon tetrachloride.

(ii) Canisters and cartridges will be tested as they are used on each pesticide respirator, either singly or in pairs.

(iii) Three canisters or cartridges or pairs of cartridges will be removed from containers and tested as received from the applicant.

(iv) Two canisters, cartridges, or pairs of cartridges will be equilibrated at room temperature by passing 25 percent relative humidity air through them at the following flow rates (expressed as liters per minute (1.p.m.)) for 6 hours:

(v) Two canisters, cartridges, o); of cartridges will be equilibrat_» room temperature by passing 8 cent relative humidity air th them at the flow rates stated in graph (f)(1)(iv) of this section hours.

(vi) The equilibrated canisters o tridges will be resealed, kept in a right position at room temper and tested within 18 hours.

(2) Canisters and cartridges test accordance with the provisions of Esection shall meet the requirem specified in Table 14 of this subpart 884.1157 Chemical cartridge

pirators with particulate fil performance requirements; gen Chemical cartridge respirators particulate filters and the indivi components of each such device sl as appropriate, meet the follow minimum requirements for perfo ance and protection:

em, filters for protection against of paints, lacquers, and enamels be tested in accordance with the sions of paragraph (f) of this sec

In addition to the test requireset forth in paragraph (c)(1) of ection, three such respirators will ested against each aerosol in acnce with the provisions of para(d) and (e) of this section. Lacquer mist test. (1) Temperature the test chamber will be approxialy 25° C.

Continuous airflow through the istor will be 32 liters per minute -purifying respirators, and not in 115 liters per minute to tight facepieces and 170 liters per Ete to loose-fitting hoods and helof powered air-purifying res

Airflow through the chamber will 3-5 air changes per minute.

The atomizer employed will be a 64-5 nozzle with setup 3, or equivaoperating at 69 kN/m.2 (10 pounds square inch gage).

5)The test aerosol will be prepared atomizing a mixture of one volume f clear cellulose nitrate lacquer and te volume of lacquer thinner. The lacper described in Federal Specification THA,October 7, 1953, is an example of acceptable lacquer. Copies of TT- may be inspected or obtained from the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505–2888.

(6) The concentration of cellulose nitrate in the test aerosol will be 95-125 milligrams per cubic meter.

(7) The test aerosol will be drawn to ach respirator for a total of 156 mintes for air-purifying respirators and 40 minutes for powered air-purifying

spirators.

8) The total amount of unretained mist in the samples taken during testing, weighed as cellulose nitrate, shall not exceed 5 milligrams for an air-purifying respirator, 28 milligrams for a powered air-purifying respirator with tight-fitting facepiece, and 41 milligrams for a powered air-purifying respirator with loose-fitting hood or hel

met.

(e) Enamel mist test. (1) Temperature in the test chamber will be approximately 25° C.

(2) Continuous airflow through the respirator will be 32 liters per minute for air-purifying respirators, and not less than 115 liters per minute to tightfitting facepieces and 170 liters per minute to loose-fitting hoods and helmets of powered air-purifying respirators.

(3) Airflow through the chamber will be 20-25 air changes per minute.

(4) The atomizer employed will be a No. 64 nozzle with setup 1A, or equivalent, operating at 69 kN/m.2 (10 pounds per square inch gage).

(5) The test aerosol will be prepared by atomizing a mixture of 1 volume of white enamel and 1 volume of turpentine. The enamel described in Federal Specification TT-E-489b, May 12, 1953, with amendment-1 of 9 November 1955 is an example of an acceptable enamel. Copies of TT-E-489b may be inspected or obtained from the NIOSH, Certification and Quality Assurance Branch, 1095 Willowdale Road, Morgantown, WV 26505-2888.

(6) The concentration of pigment in the test aerosol, weighed as ash, will be 95-125 milligrams per cubic meter.

(7) The test aerosol will be drawn to each respirator for a total of 156 minutes for air-purifying respirators and 240 minutes for power air-purifying respirators.

(8) The total amount of unretained mist in the samples taken during testing, weighed as ash, shall not exceed 1.5 milligrams for any air-purifying respirator, 8.3 milligrams for a powered air-purifying respirator with tight-fitting facepiece, and 12.3 milligrams for a powered air-purifying respirator with loose-fitting hood or helmet.

(f) Bench tests; gas and vapor tests. (1) Bench tests will be made in accordance with §84.207 and tested cartridges shall meet the minimum requirements set forth in Table 11 of subpart L of this part. Cartridges will be equilibrated in accordance with paragraph (f)(2) of this section.

(2)(i) Two powered air-purifying cartridges or pairs of cartridges will be equilibrated at room temperature by passing 25 percent relative humidity air through them at the following flow

(a) Three respirators with cart containing, or having attach them, filters for protection ar dusts, fumes, and mists, excep mists of paints, lacquers, and ens will be tested in accordance wit. provisions of §84.1157(f).

(b) In addition to the test re ments set forth in paragraph (a) op section, three such respirators w tested, as appropriate, in accor with the provisions of §§ 84.1141 thr 84.1152; however, the maximum a able resistance of complete dust, and mist, and gas, vapor, or gas vapor chemical cartridge respira shall not exceed the maximum all able limits set forth in §84.1157(a)(2)NEST