ASTM_D_6061_-_01_2012e1.pdf

Designation:D606101(Reapproved 2012)1Standard Practice forEvaluating the Performance of Respirable AerosolSamplers1This standard is issued under the fixed designation D6061;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.1NOTEReapproved with editorial changes in April 2012.1.Scope1.1 This practice covers the evaluation of the performanceof personal samplers of non-fibrous respirable aerosol.Thesamplers are assessed relative to a specific respirable samplingconvention.The convention is one of several that identifyspecific particle size fractions for assessing health effects ofairborne particles.When a health effects assessment has beenbased on a specific convention it is appropriate to use that sameconvention for setting permissible exposure limits in theworkplace and ambient environment and for monitoring com-pliance.The conventions,which define inhalable,thoracic,andrespirable aerosol sampler ideals,have now been adopted bythe International Standards Organization(ISO 7708),the Co-mit Europen de Normalisation(CEN Standard EN 481),andthe American Conference of Governmental Industrial Hygien-ists(ACGIH,Ref(1),2developed(2)in part from health-effects studies reviewed in Ref(3)and in part as a compromisebetween definitions proposed in Refs(3,4).1.2 This practice is complementary to Test Method D4532,which specifies a particular instrument,the 10-mm cyclone.3The sampler evaluation procedures presented in this practicehave been applied in the testing of the 10-mm cyclone as wellas the Higgins-Dewell cyclone.3,4Details on the evaluationhave been published(5-7)and can be incorporated intorevisions of Test Method D4532.1.3 A central aim of this practice is to provide informationrequired for characterizing the uncertainty of concentrationestimates from samples taken by candidate samplers.For thispurpose,sampling accuracy data from the performance testsgiven here can be combined with information as to analyticaland sampling pump uncertainty obtained externally.The prac-tice applies principles of ISO GUM,expanded to coversituations common in occupational hygiene measurement,where the measurand varies markedly in both time and space.A general approach(8)for dealing with this situation relates tothe theory of tolerance intervals and may be summarized asfollows:Sampling/analytical methods undergo extensiveevaluations and are subsequently applied without re-evaluationat each measurement,while taking precautions(for example,through a quality assurance program)that the method remainsstable.Measurement uncertainty is then characterized byspecifying the evaluation confidence(for example,95%)thatconfidence intervals determined by measurements bracketmeasurand values at better than a given rate(for example,95%).Moreover,the systematic difference between candidateand idealized aerosol samplers can be expressed as a relativebias,which has proven to be a useful concept and is includedin the specification of accuracy(3.2.9 3.2.10).1.4 Units of the International System of Units(SI)are usedthroughout this practice and should be regarded as standard.1.5 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:5D1356 Terminology Relating to Sampling and Analysis ofAtmospheresD4532 Test Method for Respirable Dust in Workplace At-mospheres Using Cyclone SamplersD6062 Guide for Personal Samplers of Health-RelatedAero-sol Fractions1This 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 April 1,2012.Published July 2012.Originallyapproved in 1996.Last previous edition approved in 2007 as D6061 01(2007)1.DOI:10.1520/D6061-01R12E01.2The boldface numbers in parentheses refer to a list of references at the end ofthis practice.3If you are aware of alternative suppliers,please provide this information toASTM Headquarters.Your comments will receive careful consideration at a meetingof the responsible technical committee,1which you may attend.4The sole source of supply of the Higgins-Dewell cyclone known to thecommittee at this time is BGI Inc.,58 Guinan Street,Waltham,MA 02154.5For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D6552 Practice