1、Designation:D50905(Reapproved 2011)1Standard Test Methods ofSampling and Grading Rosin1This standard is issued under the fixed designation D509;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 par
2、entheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEFootnotes 4 and 5 were editorially updated in June 2011.1.Scope1.1 These test methods cover procedures for sampling anddetermining the grade of rosin delivere
3、d in commercial bags,barrels,drums or in molten form.Although developed forrosin,these methods can also be used for the grading ofmodified rosins and rosin based resins.NOTE1All rosin sold in interstate commerce must be described byreference to the U.S.Standards for rosin,and is therefore subject to
4、grading prior to such sale.The grading procedure described in these testmethods is used for checking grades or regrading after the rosin hasmoved from the primary markets to distributing or consuming points.1.2 The values stated in SI units are to be regarded as thestandard.The values given in paren
5、theses are for informationonly.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
6、prior to use.2.Referenced Documents2.1 ASTM Standards:2D465 Test Methods for Acid Number of Naval StoresProducts Including Tall Oil and Other Related ProductsD1544 Test Method for Color of Transparent Liquids(Gard-ner Color Scale)D5974 Test Methods for Fatty and Rosin Acids in Tall OilFractionation
7、Products by Capillary Gas ChromatographyD6090 Test Method for Softening Point Resins(Mettler Cupand Ball Method)D6166 Test Method for Color of Pine Chemicals and Re-lated Products(Instrumental Determination of GardnerColor)E28 Test Methods for Softening Point of Resins Derivedfrom Naval Stores by Ri
8、ng-and-Ball Apparatus3.Significance and Use3.1 Rosin is an important product of the centuries old NavalStores industry and is produced and consumed in manycountries throughout the world.Consequently,reliable meth-ods of sampling and grading rosin are necessary.The testmethods based on the use of the
9、 USDA Official Standardsdescribed herein,were developed many years ago for thesampling and grading of rosin and are similar to those includedin the Naval Stores Act.33.2 Although these test methods based on the use of theUSDA Official Standards are still applicable,many additionaltest methods are no
10、w used to grade rosin.In particular,thecolor of rosin is now more commonly reported using theGardner color scale rather than the USDA Official Standards.In addition,Test Methods E28,D465,and D5974 are widelyused to assess the quality of rosin in addition to the colorgrading methods described in this
11、 standard.4.Sampling4.1 Number of Packages to Be SampledA preliminarysampling of 20%of the entire lot or shipment shall be made.If the grade of 85%or more of the number of such preliminarysamples agrees with the grade indicated on the package orinvoice,with none of the samples disagreeing by more th
12、anone grade,the original grading shall be considered confirmedand the shipment accepted as a good delivery.If the grades ofmorethan15%ofthepreliminarysamplesareindisagreement,or if any appreciable number are under grade bymore than one grade,additional packages in the lot to make upa total equal to
13、not less than 50%of the entire shipment(preferably the entire shipment if accessible and not too great)shall be sampled.The findings on such larger quantity shall beaccepted as the basis for settlement between the purchaser andthe seller.1These test methods are under the jurisdiction of ASTM Committ
14、ee D01 onPaint and Related Coatings,Materials,and Applications and are the directresponsibility of Subcommittee D01.34 on Pine Chemicals and HydrocarbonResins.Current edition approved June 1,2011.Published June 2011.Originallyapproved in 1938.Last previous edition approved in 2005 as D509 05.DOI:10.
15、1520/D0509-05R11E01.2For 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.3Naval Stores Act of 1923(42 Stat 1435.7 USC-9
16、1-99)as amended in 1951 andregulations promulgated thereunder by the United States Department ofAgriculture.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 Method of SamplingTake samples that are approxi-mately cubical in shape and exactly 22.225 mm(78in.)thick inthe direction in which they are to be viewed,by any of thefollowing methods:(a)by cutting or cleaving the same from a lump of rosinremoved from the solid mass in the barr
