ASTM_D_1060_-_10.pdf

Designation:D106010Standard Practice forCore Sampling of Raw Wool in Packages for Determinationof Percentage of Clean Wool Fiber Present1This standard is issued under the fixed designation D1060;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.Scope1.1This practice for sampling covers a procedure forobtaining samples from lots of grease,pulled,or scoured woolor related animal fibers in bales or bags for the determinationof the clean wool fiber present by a procedure similar to thatdescribed in Test Method D584.1.2This practice provides a description of suitable coresampling equipment,the sampling procedure,and the methodfor determining the number of packages to be bored and thenumber of cores to be taken from each sampled package.1.3Reliable estimates are given for the standard deviationof the percentage clean wool fiber present between packagesand within packages for lots of many types of raw wool.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered 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:2D123 Terminology Relating to TextilesD584 Test Method for Wool Content of Raw WoolLaboratory ScaleE105 Practice for Probability Sampling of MaterialsE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessD4845 Terminology Relating to Wool3.Terminology3.1 For all terminology relating to D13.13,Wool and WoolFelt,refer to Terminology D4845.3.1.1 The following terms are relevant to this standard:clean wool fiber present,core and raw wool.3.2 For definitions of other textile terms used in thispractice,refer to Terminology D123.4.Summary of Practices4.1 The lot is core sampled in accordance with one of aseries of equivalent schedules based on estimates of variabilityof the percentage clean wool fiber present and on the requiredlevel of precision.A set of packages of wool is taken as a lotsample.From each package in the lot sample,a fixed numberof cores of wool is drawn to be used as a laboratory sample.Guidance in the selection of the most economical of theequivalent schedules is provided.5.Significance and Use5.1 Core sampling is widely accepted,when applicable,forobtaining a laboratory sample representative of the clean woolfiber present in a lot of packaged raw wool.5.2 If the wool is so loosely packed that a core cannot becut,or if it is so highly compressed that the sampling toolcannot readily penetrate into the package to the required depthand in the required direction,core sampling is not applicable.The density of wool in most types of commercial packages issuitable for sampling by this method.5.3 The procedure described in this practice is adapted tothe application of statistical methods for estimating the size ofsample required to achieve a required level of sample precisionat minimum cost.NOTE1The basic sampling equipment,operating procedure,andstatistical approach used in this practice have been adapted for samplinglots of wool for the determination of other properties that are not affectedby boring,such as average fiber diameter,and for sampling lots of otherbulk fibers in packages.1This practice is under the juristiction ofASTM Committee D13 on Textiles andis the direct responsibility of Subcommittee D13.13 on Wool and Felt.Current edition approved June 1,2010.Published June 2010.Originallyapproved in 1949.Last previous edition approved in 2005 as D1060 96(2005).DOI:10.1520/D1060-10.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Apparatus6.1 Sampling Tool3A tube equipped with a cutting edge,together with a drill,hammer,press,or similar device,andaccessories.The tube must be capable of penetrating therequired distance(see 7.2)into a package of wool and cuttinga core therefrom,which core must be retained substantiallyunchanged within the tube during its withdrawal from apackage.6.1.1 Fig.1 illustrates the design of a recommended type ofrotatable small-diameter wool sampling tube.6.1.2 Sampling tubes in common use range from approxi-mately12to 2 in.(13 to 50 mm)in diameter,a