ASTM E2680-2009 Standard Test Method for Appearance of Clear Transparent Liquids (Visual Inspection Procedure)《清澈透明液体外观(视觉检查规程)的标准试验方法》.pdf
《ASTM E2680-2009 Standard Test Method for Appearance of Clear Transparent Liquids (Visual Inspection Procedure)《清澈透明液体外观(视觉检查规程)的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM E2680-2009 Standard Test Method for Appearance of Clear Transparent Liquids (Visual Inspection Procedure)《清澈透明液体外观(视觉检查规程)的标准试验方法》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 2680 09Standard Test Method forAppearance of Clear, Transparent Liquids (Visual InspectionProcedure)1This standard is issued under the fixed designation E 2680; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r 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 t
3、hepresence 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 methan
4、olwall 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, transpare
5、nt liquids. 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 measureme
6、nt are included 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 limitati
7、ons prior to use. Specific hazardsstatements are given in the section on Hazards, Section 8.2. Referenced Documents2.1 ASTM Standards:2D 4176 Test Method for Free Water and Particulate Con-tamination in Distillate Fuels (Visual Inspection Proce-dures)E 300 Practice for Sampling Industrial Chemicals3
8、. Terminology3.1 Definitions 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 c
9、leara 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 sufficient size to be easily noted).3.1.2.2 brighta condition in which the liquid is transpar-ent with no haze
10、 or visible fee water (or free oil) in organic (oraqueous) liquids.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 sampl
11、es, the determina-tion of free oil is 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 synony
12、mouswith haze. Quantification of haze requiring 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, sometim
13、es referred to as silt or sedi-ment and may be the result of contamination by dust, corro-sion, protective coating deterioration or product instability.3.1.6 suspended matter particles, nany foreign materialthat is in suspension in the liquid (does not float or sink) and isinsoluble or separated mat
14、ter.1This test method is under the jurisdiction of ASTM Committee E15 onIndustrial and Specialty Chemicals and is the direct responsibility of SubcommitteeE15.02 on Product Standards.Current edition approved April 1, 2009. Published April 2009.2For referenced ASTM standards, visit the ASTM website,
15、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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.
16、1.6.1 DiscussionThis usually refers to things like filterfibers, droplets, lint from materials used to dry compartments,prior cargo material or fine pieces of tank or vessel coating.3.1.7 transparent, nliquid is translucent to transmittedlight.4. Summary of Test Method4.1 An amount of liquid sample
17、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 against a bright, transmitted light to examine forclarity, suspended matter, haze and the presence of free water(or oil) and subsequently s
18、wirled to create a vortex to detect thepresence of particulate matter. For different categories of clear,transparent liquids, the number of recommended maximumallowed suspended matter particles to qualify for a pass isdefined. (Table 1).5. Significance and Use5.1 This method provides a pass/fail tes
19、t for appearance ofclear, transparent liquids. Many liquid organic products have aproduct specification requiring them to be clear and bright andfree of visible particulate matter and of liquid phases other thanthe main liquid. Producers of these liquid organic productsneed a test method to confirm
20、the quality of their productsmeets product specifications for appearance. Appearance is amanufacturing and sales specification test for ethylene glycolproducts and a loading specification test for methanol wallwashes of marine vessels. This test method was originallydesigned for application to glyco
21、ls and methanol wall washesof marine vessels, but may be applicable to other clear,transparent liquids. Individuals using this test method for otherclear transparent liquids should assure themselves that themethod is sufficient for use.5.2 There are many factors that could affect the appearancedurin
22、g and after sampling of a liquid product. These factorsmay include transferring of the liquid into a different samplecontainer, contamination by the sample container or contami-nation by ambient atmosphere. Sampling and evaluation pro-cedures need to be followed to avoid undesirable effects andassur
23、e the appearance of the sample is typical for the liquid asmanufactured.6. Interferences6.1 The sample containers must be clean and free of dust orother particulates.6.2 If an attempt is made to test the appearance of a liquidthat is darker than a color rating of 5 on the ASTM Color scale(Test Metho
24、d D 4176) or 60 Pt-Co units, the presence of freewater (or oil) or particulates could be obscured and missed bythe analyst.7. Apparatus7.1 Sample Container, clear glass with a screw cap (notcontaining a gasket) capable of holding sample volumes of upto 1 L. The volume of the sample tested should be
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