1、Designation:E268009(Reapproved 2015)Standard Test Method forAppearance of Clear,Transparent Liquids(Visual InspectionProcedure)1This standard is issued under the fixed designation E2680;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,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 describes the visual assessment of theappearance of clear,transparent liquids for clarity and
3、 thepresence of undesirable components(contamination)such assuspended matter,free water(or oil)and particulates whenexamined by transmitted light.Measurements requiring instru-mentation are not included in this method.This test methodwas originally designed for application to glycols and methanolwal
4、l washes of marine vessels but may be applicable to otherclear transparent liquids.1.1.1 This method can be used as a field test at storagetemperatures or as a laboratory test at room temperatures.1.1.2 This method provides a rapid pass/fail test for clarityand contamination of clear,transparent liq
5、uids.It is a qualita-tive assessment only.1.2 Review the current appropriate Material Safety DataSheets(MSDS)for detailed information concerning toxicity,first aid procedures,and safety precautions.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are incl
6、uded in thisstandard.1.4 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 u
7、se.Specific hazardsstatements are given in the section on Hazards,Section 8.2.Referenced Documents2.1 ASTM Standards:2D4176 Test Method for Free Water and Particulate Contami-nation in Distillate Fuels(Visual Inspection Procedures)E300 Practice for Sampling Industrial Chemicals3.Terminology3.1 Defin
8、itions of Terms Specific to This Standard:3.1.1 appearance,nthe visual perception of a clear,trans-parent liquid.3.1.2 clear and bright(also referred to as clean and bright),na condition in which the liquid is free of haze,particulatesor suspended matter particles.3.1.2.1 brighta condition in which
9、the liquid is transparentwith no haze or visible fee water(or free oil)in organic(oraqueous)liquids.3.1.2.2 cleara condition in which the liquid contains novisible contaminants(not more than the maximum allowednumber of suspended matter particles no greater than 1 mm indiameter or particulates of su
10、fficient size to be easily noted).3.1.3 free water(or free oil),nwater or oil in excess tothat soluble in the liquid at ambient temperature which mayappear as haze,cloudiness,droplets or a water or oil layer in anorganic sample.3.1.3.1 DiscussionFor aqueous samples,the determina-tion of free oil is
11、equally important and may have an appear-ance similar to that of free water or oil in organic samples.3.1.4 haze or cloudiness,nis a scatter of light from anaccumulation of tiny suspended particles in the liquid.3.1.4.1 DiscussionCloudiness is considered synonymouswith haze.Quantification of haze re
12、quiring instrumentation isout of the scope of this standard.3.1.5 particulates,nany foreign material in the liquid thatfloats or settles to the bottom of the sample bottle.3.1.5.1 DiscussionThese particulates may be small solidor semi-solid particles,sometimes referred to as silt or sedi-ment and ma
13、y be the result of contamination by dust,corrosion,protective coating deterioration or product instabil-ity.3.1.6 suspended matter particles,nany foreign materialthat is in suspension in the liquid(does not float or sink)and isinsoluble or separated matter.3.1.6.1 DiscussionThis usually refers to th
14、ings like filterfibers,droplets,lint from materials used to dry compartments,prior cargo material or fine pieces of tank or vessel coating.1This test method is under the jurisdiction of ASTM Committee E15 onIndustrial and Specialty Chemicals and is the direct responsibility of SubcommitteeE15.02 on
15、Product Standards.Current edition approved June 1,2015.Published June 2015.Originallyapproved in 2009.Last previous edition approved in 2009 as E2680091.DOI:10.1520/E2680-09R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For A
16、nnual 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 3.1.7 transparent,nliquid is translucent to transmittedlight.4.Summary of Test Method4.1 An amount of liquid sample at storage or room tempera-ture is visually examined for clarity and presence of contami-nants.The sample is collected in a transparent glass containerand held aga
