1、Designation:D742716(Reapproved 2021)Standard Test Method forImmunological Measurement of Four Principal AllergenicProteins(Hev b 1,3,5 and 6.02)in Hevea Natural Rubberand Its Products Derived from Latex1This standard is issued under the fixed designation D7427;the number immediately following the de
2、signation 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 covers an immunolo
3、gical methodknown as an immunoenzymetric assay to quantify the amountof 4 principal Hevea brasiliensis Hev b allergenic proteinsHev b 1,Hev b 3,Hev b 5 and Hev b 6.02 in Hevea naturalrubber and its products2derived from latex using monoclonalantibodies specific for epitopes on these proteins.Since t
4、heseassays quantify the levels of only 4 of the known 14 officiallyacknowledged allergens potentially present in Hevea naturalrubber latex containing products,the sum of the four allergenlevels shall be viewed as an indicator of the allergen burdenand not as a measure of the total allergen content t
5、hat can bereleased from the product.1.2 For the purpose of this test method,the range ofallergenic protein will be measured in terms of nanogram tomicrogram quantities per gram or unit surface area of a Heveanatural rubber containing product.1.3 The test method is not designed to evaluate the potent
6、ialof Hevea natural rubber containing materials to induce or elicitType I(IgE-mediated)hypersensitivity reactions.1.4 This test method should be used under controlledlaboratory conditions to detect and quantify the level of 4allergenic proteins found in Hevea natural rubber containingproducts.It sho
7、uld not be used to describe,appraise or assessthe hazard or risk of these Hevea natural rubber containingmaterials or products under actual in use conditions.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This standard d
8、oes 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This international
9、standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.R
10、eferenced Documents2.1 ASTM Standards:3D1193 Specification for Reagent WaterD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD4678 PracticeforRubberPreparation,Testing,Acceptance,Documentation,and Use of Reference Mate-rialsD5712
11、Test Method for Analysis of Aqueous ExtractableProtein in Latex,Natural Rubber,and Elastomeric Prod-ucts Using the Modified Lowry MethodD6499 Test Method for Immunological Measurement ofAntigenic Protein in Hevea Natural Rubber(HNR)and itsProductsE691 Practice for Conducting an Interlaboratory Study
12、 toDetermine the Precision of a Test Method3.Terminology3.1 Definitions:3.1.1 accepted reference value(ARV)value that serves asan agreed upon reference for comparison and which is derivedas(1)a theoretical or established value,based on scientificprinciples,(2)an assigned or certified value,based on
13、experi-mental work of some national or international organization,or1This test method is under the jurisdiction of ASTM Committee D11 on Rubberand Rubber-like Materials and is the direct responsibility of Subcommittee D11.40on Consumer Rubber Products.Current edition approved May 1,2021.Published Ju
14、ly 2021.Originally approvedin 2008.Last previous edition approved in 2016 as D7427 16.DOI:10.1520/D7427-16R21.2This procedure has not been validated for condoms,particularly lubricatedcondoms,which could contain surfactants or other ingredients that could interferewith the assay.3For referenced ASTM
15、 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 19
16、428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1(3)a consensus or certified value,based on collaborativeexperimental work under the auspices of a scientific orengineering group.3.1.1.1 DiscussionARV is an averag
