ASTM_D_5337_-_11.pdf

Designation:D533711Standard Practice forFlow Rate Adjustment of Personal Sampling Pumps1This standard is issued under the fixed designation D5337;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes the calibration of samplingpumps commonly used for monitoring personal airborne ex-posures in the work-place.1.2 This practice includes procedures for describing primaryand secondary calibration techniques.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1356 Terminology Relating to Sampling and Analysis ofAtmospheres2.2 NIOSH and OSHA Documents:HSM-99-71-31 Personal Sampling Pump for CharcoalTubes;Final Report3NIOSH Manual of Analytical Methods,4thed.4OSHA Analytical Methods Manual53.Terminology3.1 For definitions of terms used in this practice,refer toTerminology D1356.3.2 The term primary flow-rate calibration,as used in thispractice,does not imply the calibration is traceable to aprimary standard,unless the apparatus used in the calibration(burets,stop-watches,etc.)has been demonstrated to betraceable to national or international standards,and that thistraceability is established on a routine(generally annual)basis.Traceability of calibration is strongly recommended.4.Summary of Practice4.1 Abubble tube meter or electronic near-frictionless pumpis used for primary calibration of personal sampling pumps.The practice is applicable to systems using air samplingdevices.Provisions are made for both manual and automatedbubble meters.4.2 Secondary calibration procedures for field applicationsare also included in the practice(see 7.3).5.Significance and Use5.1 Most occupational exposure assessment methods re-quire the use of personal sampling pumps to collect air samplesat typical workplace sampling rates,with sampling volumesspecified by(a)particular procedure(s).The precision and biasof these methods are directly affected by the precision and biasof the pumps used to measure the air volume(s)sampled.6.Apparatus6.1 Burets,1-L(for high flow)and 100-mL or 10 mL(forlow flow).6.2 Manometer.6.3 Rotameter.6.4 Stop Watch.6.5 Electronic Bubble Meter or Near-frictionless PistonFlowmeter(alternates),should have traceable calibration(see3.2).7.Procedure7.1 Calibrate the personal sampling pumps before andmeasure after each days sampling.7.2 Primary Flow-rate Calibration Device(s),(as noted in3.2,these are not primary standards unless the apparatus usedin the calibration has been demonstrated to be traceable tonational and international standards):7.2.1 Bubble Meter Method:1This practice is under the jurisdiction ofASTM Committee D22 on Air Qualityand is the direct responsibility of Subcommittee D22.04 on Workplace Air Quality.Current edition approved Nov.15,2011.Published December 2011.Originallyapproved in 1992.Last previous edition approved in 2004 as D5337 04.DOI:10.1520/D5337-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from the U.S.Department of Commerce,National Technical Infor-mation Service,Port Royal Road,Springfield,VA 22161.4Centers for Disease Control and Prevention(CDC),National Institute forOccupational Safety and Health(NIOSH),Cincinnati,Ohio(1994);Available fromNIOSH Publications,4676 Columbia Parkway,Cincinnati,Ohio 45226;www.cdc.gov/niosh/nmam.5Occupational Safety and Health Administration,Salt Lake Technical Center,Salt Lake City,Utah(1985);Available from OSHAAnalytical Laboratory,8660 S.Sandy Parkway,Sandy,UT 84070;www.osha.gov/dts/sltc/methods.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.2.1.1 Allow the pump to run five minutes prior to calibra-tion to stabilize pump.7.2.1.2 Connect pump to an appropriate sampling train.Sampling trains identical to that used in sampling for sorbenttubes,filter cassettes,and cyclones are shown in Figs.1-3.7.2.1.3 Check all connections to insure their integrity.7.2.1.4 Wet the inside surface of the 1-L buret with the soapsolution(use a 100-mL buret for low flow pumps).7.2.1.5 Turn on the pump and momentarily submerge theopening of the buret into the soap solution to form a bubble.7.2.1.6 With a stop watch,time the travel of a single filmfrom the zero mark to the calibrated volume mark.Note thetime and repeat this procedure at least three times.7.2.1.7 Calculate the flow