ASTM_E_2316_-_14.pdf

Designation:E231614Standard Test Method forDetermination of Particles Resulting from the Attrition ofGranular Pesticides1This standard is issued under the fixed designation E2316;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 test method is used to determine the amount andparticle size distribution curve of particles with diameter 106micrometers or smaller resulting from the attrition of granularpesticides.1.2 The values stated in SI units are to be regarded asstandard.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.For specific hazardstatement,see Section 8.2.Referenced Documents2.1 ASTM Standards:2E11 Specification for Woven Wire Test Sieve Cloth and TestSievesE725 Test Method for Sampling Granular Carriers andGranular Pesticides2.2 CIPAC Standard:CIPAC Test Method MT 18733.Terminology3.1 Definitions:3.1.1 finesa synonym for particles with diameter of 106micrometers or smaller.3.1.2 micron and m synonyms for micrometer.4.Summary of Test Method4.1 The initial weight of a test sample of granular pesticideis determined.The sample is then air jet sieved using 106micron openings to remove the inherent fines.The fines-freegranules are then combined with glass beads in a glass jar,thelid is placed on the jar,and the jar is placed on a roller systemwith a drive bed capable of rotating the jar at a known rpm.After rolling for a specified time period,the jar is removedfrom the rollers and the contents of the jar are poured througha sieve sized to remove the glass beads.The sample minus theglass beads is again air jet sieved using 106 micron openings toremove the fines attrited during the rolling of the jar.The totalof particles smaller than 106 microns for the test sample is theinherent fines plus the attrited fines.The particle size distribu-tion curve of the combined inherent and attrited fines isdetermined by laser light diffraction using CIPAC Test MethodMT 187.5.Significance and Use5.1 This test method is designed specifically for granularpesticide formulations.5.2 This test method helps provide information on healthhazards likely to arise from exposures by the inhalation route.It can be of use in selecting dose levels for chronic studies andfor establishing safety criteria for human exposure.5.3 The amount of fines determined by this method is ameasure of potential inhalation and respiration toxicity becausethe hazards of inhaled solid substances are influenced byphysical factors such as particle size.6.Apparatus6.1 Roller System,two or more rollers with a drive bed,capable of rotating the specified glass jar at 75 6 15 rpm.6.2 Glass Jar,with lid,capacity 500 mL,outer diameter 8cm,height 15 cm.1This test method is under the jurisdiction of ASTM Committee E35 onPesticides,Antimicrobials,and Alternative Control Agentsand is the direct respon-sibility of Subcommittee E35.22 on Pesticide Formulations and Delivery Systems.Current edition approved Oct.1,2014.Published December 2014.Originallyapproved in 2003.Last previous edition approved in 2014 as E231603(2014).DOI:10.1520/E2316-14.2For 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.3The size distribution of the particles with sieve diameter less than 106 m isdetermined by laser light diffraction using CIPAC Test Method MT 187.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.3 Glass Beads,diameter 4.0 6 0.2 mm,bulk density 1.5g/cc.6.4 Micron Air Jet Sieve,with GAZ 125 cyclone finescollector or Alpine Air Jet Sieve,with GAZ 125 cyclone finescollector,4or equivalent.6.5 Sieves,U.S.standard series conforming to SpecificationE11,diameter 8 in.(203 mm),height 2 in.(51 mm):10-mesh(2 mm openings),140-mesh(106 m openings).NOTE1The amount of particles with sieve diameter 106 m orsmaller is determined by sieving.6.6 Balance,sensitivity of 0.01 g.6.7 Hygrometer,minimum range of 25 to 95%relativehumidity.6.8 Apparatus specified in CIPAC Test Method MT 187.7.Reagents and Materials7.1 Granular pesticide to be tested.7.2 Reagents and materials specified in CIPAC Test MethodMT 187.8.Hazards8.1 Before testing,read the precautionary statements on theproduct label and the Material Safety Data Sheet(MSDS).Take proper precautions to prevent skin contact and inhalationof the fines.Take care to prevent contamination of thesurrounding area.Always wear the appr