ASTM E727 E727M-2008(2013) 9693 Standard Test Methods for Determining Bulk Density of Granular Carriers and Granular Pesticides《测定粒状载体与粒状农药的体积密度的标准试验方法》.pdf

1、Designation: E727/E727M 08 (Reapproved 2013)Standard Test Methods forDetermining Bulk Density of Granular Carriers and GranularPesticides1This standard is issued under the fixed designation E727/E727M; the number immediately following the designation indicates the yearof original adoption or, in the

2、 case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 These test methods are used to determine bulk density ofgranular carriers and granular

3、pesticides by measuring eitherfree-fall bulk density (Test Method A) or loose-fill bulk density(Test Method B).1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem sh

4、all be used independently of the other. Combiningvalues from the two systems may result in nonconformancewith the standard.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

5、-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. For specific hazardstatements see Section 4.2. Referenced Documents2.1 ASTM Standards:2E725 Test Method for Sampling Granular Carriers andGranular Pesticides3. Significance and Use3.1 These t

6、est methods were designed principally for clay,corncob, nut shell, paper-based or sand granular carriers, andgranular pesticide products, but need not be limited to thesematerials. There may be more appropriate test methods forother types of granular carriers or pesticide products. Thedifferences in

7、 the following test methods are slight, but theyoffer a choice of a recognized test procedure.4. Hazards4.1 Before testing granular pesticides, read the precaution-ary statements on the product label. Take proper precautions toprevent skin contact and inhalation of the fines and vapors.Take care to

8、prevent contamination of the surrounding area.Always wear the appropriate safety equipment and, whereindicated, wear respiratory devices approved by NIOSH for theproduct being tested.5. Summary of Test Method AFree-Fall Bulk Density5.1 A tared 500-mL cylinder is filled with the granularcarrier or gr

9、anular pesticide. The weight of the sample ismeasured and the bulk density calculated in pounds per cubicfoot or kilograms per cubic meter.6. Apparatus6.1 Balance, sensitivity of 1 g.6.2 Cylinder, graduated, capacity 500 mL. The cylindershould be calibrated at the 500-mL mark by using 499 g waterat

10、20C. The cylinder is cut off at the 500-mL mark and groundsmooth.6.3 Funnel, powder, 152 mm 6 in. in diameter at the top,bottom stem opening of 25-mm 1-in. diameter, and sideshaving a slope of approximately 60.6.4 Spatula, large with 51-mm 2-in. wide blade.6.5 Beaker, glass, metal, or plastic, 600-m

11、L capacity.6.6 Pan, metal or plastic, 203 mm 8 in. in diameter with51-mm 2-in. sides to collect overflow of cylinder.6.7 Ring Stand and Ring Clamp.7. Procedure7.1 Weigh the 500-mL graduated cylinder and place it in theoverflow pan.7.2 Support the funnel on a ring which is then affixed to aring stand

12、 such that the top of the funnel is horizontal andrigidly in position. Adjust the height of the funnel so that itsbottom position is 38 mm 1.5 in. above the top center of the500-mL graduated cylinder.7.3 Hold a piece of flat metal (such as a wide spatula orsimilar tool) against the bottom of the fun

13、nel stem. Fill a1These test methods are under the jurisdiction of ASTM Committee E35 onPesticides, Antimicrobials, and Alternative Control Agents and are the directresponsibility of Subcommittee E35.22 on Pesticide Formulations and DeliverySystems.Current edition approved Oct. 1, 2013. Published Mar

14、ch 2014. Originallyapproved in 1980. Last previous edition approved in 2008 as E727 08. DOI:10.1520/E0727_E0727M-08R13.2For 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

15、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 States1600-mL beaker with a representative sample of the granularcarrier as defined in Test Method E725 and pour into thefunnel. Quickl

16、y remove the metal plate, allowing the granulesto fall into the graduate of their own accord.7.4 Hold the graduate firmly and level off the granules to thetop of the graduate with the straight edge of the spatula. Avoidjiggling or vibrating the cylinder.7.5 Tap the cylinder to tamp the particles int

17、o the cylinderaway from the top, to avoid spillage losses during handling.7.6 Reweigh the cylinder and determine the weight of thesample to the nearest 1 g.7.7 Determine the weight on duplicate samples.8. Calculation8.1 For the granular carrier or granular pesticide, calculatethe free-fall bulk dens

18、ity as follows:Free 2 fall density kg/m3! 5 grams granular material 32.0 (1)Free 2 fall density lb/ft3! 5 grams granular material 30.125 (2)9. Summary of Test Method BLoose-Fill Bulk Densityof Granular Materials9.1 A tared dry pint cup is filled to overflowing with agranular carrier or granular pest

19、icide. The sample is leveled.The weight of the sample is measured and the bulk densitycalculated in pounds per cubic foot.10. Apparatus10.1 Filling Hopper, Ohaus Model 150.310.2 Cup, standard dry pint. Note that a standard dry pintcup is used in this test, not a wet pint cup.10.3 Balance, sensitivit

20、y of 0.1 g.10.4 Straightedge.10.5 Catch Pan.11. Procedure11.1 Weigh the standard dry pint cup to the nearest 0.1 g(W1).11.2 Select 400 g of material in accordance with MethodE725.11.3 Close the slide gate on the bottom of the Ohaus fillinghopper and pour the 400 g of material into the hopper.11.4 Po

21、sition the dry pint cup below the gate so the cup iscentered and 2 in. below the gate. Place a catch pan below thecup to catch any sample overflow.11.5 Open the gate quickly and let the sample fill the cupand overflow. Do not vibrate the cup or close the gate before allof the sample flows out of the

22、 hopper.11.6 Level the material in the cup with a straightedge usinga gentle sawing motion.11.7 Weigh the cup to the nearest 0.1 g (W2).12. Calculation12.1 For the granular carrier or granular pesticide, calculatethe loose-fill bulk density as follows:Bulk density kg/m3! 5 W12 W2! 30.1.82 (3)Bulk de

23、nsity lb/ft3! 5 W22 W1! 30.113 (4)13. Precision and Bias13.1 These test methods yield comparative data. The pass/fail aspect of these procedures should be determined byapplicable specifications.14. Disposal of Samples14.1 After testing, store all materials in a safe manner anddispose of used materia

24、l in accordance with product labeldirections, or material safety data sheets, or both.15. Keywords15.1 bulk density; free-fall; granule; loose-fill; pesticideASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standa

25、rd. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewe

26、d every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible

27、technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consh

28、ohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to p

29、hotocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).3The sole source of supply of the apparatus known to the committee at this timeis Ohaus Scales, 29 Hanover Rd., Florham Park, NJ 07932. If you are aware ofalternative suppliers, please provide this information to ASTM Headquarters. Yourcomments will receive careful consideration at a meeting of the responsibletechnical committee,1which you may attend.E727/E727M 08 (2013)2