1、Designation:D445699(Reapproved 2009)1Standard Test Methods forPhysical and Chemical Properties of Powdered IonExchange Resins1This standard is issued under the fixed designation D4456;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,t
2、he 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.1NOTEUpdated 4.2 editorially in June 2009.1.Scope1.1 These test methods cover the determination of thephysical and chemical
3、 properties of powdered ion exchangeresins and are intended for use in testing new materials.Thefollowing test methods are included:SectionsTest Method AParticle Size Distribution5 to 15Test Method BSolids Content16 to 231.2 The values stated in SI units are to be regarded asstandard.No other units
4、of measurement are included in thisstandard.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 consult andestablish appropriate safety and health practices and deter-mine the applicability of
5、regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2687 Practices for Sampling Particulate Ion-Exchange Ma-terialsD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Co
6、mmittee D19 on WaterF322F651F658 Practice for Calibration of a Liquid-Borne ParticleCounter Using an Optical System Based Upon LightExtinction(Withdrawn 2007)33.Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice,refer to Terminology D11293.2 Definitions of Terms Specific to Th
7、is Standard:3.2.1 Certain terms that relate specifically to these testmethods are described as follows:3.2.2 powdered ion exchange resinan ion exchange resinthat has undergone post-manufacturing size reduction to lessthan 30 m.3.2.3 resin flocthat voluminous aggregate formed whenpowdered anion excha
8、nge resin and powdered cation exchangeresin are slurried together in an aqueous suspension.4.Purity of Reagents4.1 Reagent grade chemicals shall be used in all tests.Unless otherwise indicated,it is intended that all reagents shallconform to the specifications of the Committee on AnalyticalReagents
9、of the American Chemical Society,4where suchspecifications are available.Other grades may be used,pro-vided it is first ascertained that the reagent is of sufficientlyhigh purity to permit its use without lessening the accuracy ofthe determination.4.2 Purity of Water Unless otherwise indicated,refer
10、encesto water shall be understood to mean Type III reagent water,Specification D1193.1These test methods are under the jurisdiction of ASTM Committee D19 onWater and are the direct responsibility of Subcommittee D19.08 on Membranes andIon Exchange Materials.Current edition approved May 1,2009.Publis
11、hed June 2009.Originallyapproved in 1985.Last previous edition approved in 2005 as D4456 99(2005).DOI:10.1520/D4456-99R09E01.2For 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
12、 to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Reagent Chemicals,American Chemical Society Specifications,AmericanChemical Society,Washington,DC.For Suggestions on the testing of reagents notlisted by th
13、e American Chemical Society,see Annual Standards for LaboratoryChemicals,BDH Ltd.,Poole,Dorset,U.K.,and the United States Pharmacopeiaand National Formulary,U.S.Pharmacopeial Convention,Inc.(USPC),Rockville,MD.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-
14、2959.United States1 TEST METHOD APARTICLE SIZEDISTRIBUTION5.Scope5.1 This test method covers the instrumental determinationof the particle-size distribution of powdered ion exchangeresins.6.Summary of Test Method6.1 A sample of powdered ion exchange resin is disperseduniformly in a suitable aqueous
15、liquid.The resulting suspen-sion is passed through an instrument for measuring particle sizedistribution by weight,number,or volume.Determinations aremade of mean particle size,percent below a specified smallersize limit,and percent above a specified larger size limit.6.2 The analyst should be aware
16、 that adequate collaborativedata for precision and bias statements as required by PracticeD2777 are not provided.See Section 15 for details.7.Significance and Use7.1 The particle size distribution of powdered ion exchangeresins and,more importantly,the derived parameters of meanparticle size and percent above and below specified size limitsare useful for determining batch to batch variations and,insome cases,can be related to certain aspects of productperformance.7.2 Although automatic multichan
