1、Designation:D800518Standard Test Method forColor of Clear Liquids(Platinum-Cobalt Scale)1This standard is issued under the fixed designation D8005;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
2、parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers a procedure for the visualmeasurement of the color of near clear liquids.It is applicableonly to materials in which the colo
3、r-producing bodies presenthave light absorption characteristics nearly identical with thoseof the Platinum-Cobalt(Pt-Co)color standards used.1.2 This test method has been found applicable to the colormeasurement of clear,liquid samples,free of haze,withnominal Pt-Co color values between 0 and 100.It
4、 is applicableto nonfluorescent liquids with light absorption characteristicssimilar to those of the Pt-Co color standard solutions.TestMethods D1209,D1686,and D5386 deal with the visual andinstrumental measurement of near-clear liquids.1.3 In determining the conformance of the test results usingthi
5、s method to applicable specifications,results shall berounded in accordance with the rounding off methods ofPractice E29.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of the
6、safety 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.1.6 This international standard was developed in accor-dance
7、 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.Referenced Documents2.1 ASTM Standards
8、:2D1193 Specification for Reagent WaterD1209 Test Method for Color of Clear Liquids(Platinum-Cobalt Scale)D1686 Test Method for Color of Solid Aromatic Hydrocar-bons and Related Materials in the Molten State(Platinum-Cobalt Scale)D3437 Practice for Sampling and Handling Liquid CyclicProductsD5386 Te
9、st Method for Color of Liquids Using TristimulusColorimetryD6809 Guide for Quality Control and Quality AssuranceProcedures for Aromatic Hydrocarbons and Related Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE691 Practice for Conducting an
10、 Interlaboratory Study toDetermine the Precision of a Test Method2.2 Other Documents:OSHA Regulations,29 CFR paragraphs 1910.1000 and1910.120033.Summary of Test Method3.1 A specimen is placed in a Nessler tube and compared toa series of prepared Pt-Co standards.4.Significance and Use4.1 The major ob
11、jective of the visual Pt-Co method of colormeasurement is to rate specific materials for yellowness.Theyellowness is frequently the result of the undesirable tendencyof liquid hydrocarbons to absorb blue light due to contamina-tion in processing,storage,or shipping.1This test method is under the jur
12、isdiction of ASTM Committee D16 onAromatic,Industrial,Specialty and Related Chemicals and is the direct responsi-bility of Subcommittee D16.01 on Benzene,Toluene,Xylenes,Cyclohexane andTheir Derivatives.Current edition approved Feb.1,2018.Published March 2018.Originallyapproved in 2015.Last previous
13、 edition approved in 2015 as D8005 15.DOI:10.1520/D8005-18.2For 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.3Availa
14、ble from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 194
15、28-2959.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 Technic
16、al Barriers to Trade(TBT)Committee.1 5.Apparatus5.1 Spectrophotometer,equipped for liquid samples and formeasurements in the visible region.5.1.1 The spectrophotometer used must be clean and infirst-class operating condition.The instrument should be cali-brated in accordance with the instructions in the Standards forChecking and Calibration of Spectrophotometers(200 to 1000cm).45.2 Spectrophotometer Cells,matched having a 10-mm lightpath.5.3 Color Comparison TubesMatched 100-mL,tall-formNessler