ASTM E2680-2016 Standard Test Method for Appearance of Clear Transparent Liquids (Visual Inspection Procedure)《明显透明液体的表观的标准试验方法(目视检查程序)》.pdf
《ASTM E2680-2016 Standard Test Method for Appearance of Clear Transparent Liquids (Visual Inspection Procedure)《明显透明液体的表观的标准试验方法(目视检查程序)》.pdf》由会员分享,可在线阅读,更多相关《ASTM E2680-2016 Standard Test Method for Appearance of Clear Transparent Liquids (Visual Inspection Procedure)《明显透明液体的表观的标准试验方法(目视检查程序)》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E2680 09 (Reapproved 2015)1E2680 16Standard 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
2、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 NOTEEditorial change was made in Subsections 1.2, 8.1, and 8.2 in May 2016.1. Scope1.1 This test m
3、ethod describes the visual assessment of the appearance of clear, transparent liquids for clarity and the presenceof undesirable components (contamination) such as suspended matter, free water (or oil) and particulates when examined bytransmitted light. Measurements requiring instrumentation are not
4、 included in this method. This test method was originallydesigned for application to glycols and methanol wall washes of marine vessels but may be applicable to other clear transparentliquids.1.1.1 This method can be used as a field test at storage temperatures or as a laboratory test at room temper
5、atures.1.1.2 This method provides a rapid pass/fail test for clarity and contamination of clear, transparent liquids. It is a qualitativeassessment only.1.2 Review the current appropriate Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures,and safety precautio
6、ns.1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establis
7、h appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use. Specific hazards statements are given in the section on Hazards, Section 8.2. Referenced Documents2.1 ASTM Standards:2D4176 Test Method for Free Water and Particulate Contamination in Dis
8、tillate Fuels (Visual Inspection Procedures)E300 Practice for Sampling Industrial Chemicals3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 appearance, nthe visual perception of a clear, transparent liquid.3.1.2 clear and bright (also referred to as clean and bright), na condit
9、ion in which the liquid is free of haze, particulates orsuspended matter particles.3.1.2.1 brightbright, na condition in which the liquid is transparent with no haze or visible fee water (or free oil) in organic(or aqueous) liquids.3.1.2.2 clearclear, na condition in which the liquid contains no vis
10、ible contaminants (not more than the maximum allowednumber of suspended matter particles no greater than 1 mm in diameter or particulates of sufficient size to be easily noted).3.1.3 free water (or free oil), nwater or oil in excess to that soluble in the liquid at ambient temperature which may appe
11、aras haze, cloudiness, droplets or a water or oil layer in an organic sample.1 This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of SubcommitteeD16.16 on Industrial and Specialty Product Standards.Current
12、edition approved June 1, 2015Dec. 1, 2016. Published June 2015December 2016. Originally approved in 2009. Last previous edition approved in 20092015 asE2680 09 (2015) 1. DOI: 10.1520/E2680-09R15E01.10.1520/E2680-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM C
13、ustomer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to
14、 the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyrigh
15、t ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.3.1 DiscussionFor aqueous samples, the determination of free oil is equally important and may have an appearance similar to that of free wateror oil in organic samples.3.1.4 haze or cloudine
16、ss, nis a scatter of light from an accumulation of tiny suspended particles in the liquid.3.1.4.1 DiscussionCloudiness is considered synonymous with haze. Quantification of haze requiring instrumentation is out of the scope of thisstandard.3.1.5 particulates, nany foreign material of any color in th
17、e liquid that floats or settles to the bottom of the sample bottle.3.1.5.1 DiscussionThese particulates may be small solid or semi-solid particles, sometimes referred to as silt or sediment and may be the result ofcontamination by dust, corrosion, protective coating deterioration or product instabil
18、ity.3.1.6 suspended matter particles, nany foreign material of any color that is in suspension in the liquid (does not float or sink)and is insoluble or separated matter.3.1.6.1 DiscussionThis usually refers to things like filter fibers, droplets, lint from materials used to dry compartments, prior
19、cargo material or finepieces of tank or vessel coating.3.1.7 transparent, nliquid is translucent to transmitted light.4. Summary of Test Method4.1 An amount of liquid sample at storage or room temperature is visually examined for clarity and presence of contaminants.The sample is collected in a tran
20、sparent glass container and held against a bright, transmitted light to examine for clarity, suspendedmatter, haze and the presence of free water (or oil) and subsequently swirled to create a vortex to detect the presence of particulatematter. For different categories of glycols, the number of recom
21、mended maximum allowed suspended matter particles clear,transparent liquids, the recommended maximum number of allowed particles (either floating, settling, 3.1.5, or suspended, 3.1.6)to qualify for a pass is defined. (Table 1). For other clear, transparent liquids, other numbers may be defined (for
22、 example, on therelevant product specifications).TABLE 1 Recommended Maximum Number of SuspendedParticles Allowed for a Sample to PassSample Type Recommended Numberof Particles Allowed Typical SampleVolume (mL)Ethylene Glycol 0 6 500Diethylene Glycol 0 6 500Triethylene Glycol 0 6 500TetraethyleneGly
23、col0 6 500Methanol WallWash0 20 400TABLE 1 Recommended Maximum Number of Particles Allowedfor a Sample to PassSample Type Numberof Particles Typical SampleVolume (mL)Ethylene Glycol 6 500Diethylene Glycol 6 500Triethylene Glycol 6 500Propylene Glycol, 6 500(Polyether) Polyol 6 500TetraethyleneGlycol
24、6 500Methanol WallWash20 400E2680 1625. Significance and Use5.1 This method provides a pass/fail test for appearance of clear, transparent liquids. Many liquid organic products have aproduct specification requiring them to be clear and bright and free of visible particulate matter and of liquid phas
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