1、Designation: E786 81 (Reapproved 2017)Standard Specification forDishes, Evaporating, Platinum1This standard is issued under the fixed designation E786; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A nu
2、mber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This specification covers platinum evaporating dish
3、essuitable for water analysis and laboratory use.2. Referenced Documents2.1 Federal Standards:2Fed. Std. No. 123 Marking for Shipment (Civil Agencies)2.2 Military Standards:2MIL-STD-105 Sampling Procedures and Tables for Inspec-tion by AttributesMIL-STD-129 Marking for Shipment and StorageMIL-STD-11
4、88 Commercial Packaging of Supplies andEquipment3. Classification3.1 Types and CapacitiesPlatinum evaporating dishesshall be of the following types and capacities as specified (seeS2.1).3.1.1 Type IShallow form without pour-out spout. Capac-ity: 100 mL.3.1.2 Type IIRegular form with pourout spout. C
5、apacity:50 mL.3.1.3 Type III125 mL.4. Materials4.1 Unless otherwise specified, the platinum dishes shall bemade of 99.9 % platinum alloyed with not more than 0.4 %iridium.5. Dimensions, Mass, and Permissible Variations5.1 Platinum evaporating dishes shall be either of two types:Type I, shallow dish
6、without pourout spout, having slightlytapered sides and a flat bottom having a minimum thickness of0.16 mm; or Type II, rounded bottom with a pourout spoutconforming to the dimensions in Table 1.6. Workmanship6.1 Platinum evaporating dishes shall be free of defects(scratches, dents, punctures) and c
7、ontamination (grease, oil,foreign matter) that detract from their appearance or that willimpair their serviceability.7. Marking7.1 Platinum evaporating dishes shall be permanently andlegibly marked with the name or registered trademark of themanufacturer.8. Keywords8.1 dishes; evaporating; platinum1
8、This specification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onLaboratory Ware and Supplies.Current edition approved Jan. 1, 2017. Published February 2017. Originallyapproved in 1981. Last previous edition approved
9、in 2011 as E786 81 (2011).DOI: 10.1520/E0786-81R17.2Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2
10、959. 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
11、 Barriers to Trade (TBT) Committee.1SUPPLEMENTARY REQUIREMENTSThe following supplementary requirements are binding when this specification is used by theDepartment of Defense and the Federal Government for the procurement of platinum evaporatingdishes.S1. SamplingS1.1 Sampling for nondestructive exa
12、mination shall beconducted in accordance with MIL-STD-105.S2. Ordering InformationS2.1 Procurement documents should specify the following:S2.1.1 Title, number, and date of this ASTM specification.S2.1.2 Level of packaging and packing required,S2.1.3 Type and capacity (when applicable) of evaporating
13、dish required, andS2.1.4 Material if other than as specified.S2.2 Suppliers ResponsibilityThe supplier is responsiblefor the performance of all inspection requirements as specifiedherein. Except as otherwise specified, the supplier may use hisown or any other inspection facilities and services accep
14、tableto the government. Inspection records of the examination andtests shall be kept complete and available to the government asspecified in the contract or order. The government reserves theright to perform any of the inspections set forth in thespecification where such inspections are deemed neces
15、sary toensure that supplies and services conform to prescribed re-quirements.S2.3 Transportation DescriptionTransportation descrip-tion applicable to this item is: Dish, Evaporating, Platinum,Not taken by Freight and Ship only via UPS or Parcel Post.S3. Lotting and SamplingS3.1 A lot shall consist o
16、f the platinum evaporating dishesof the same type and the same capacity offered for acceptanceat one time, which has been produced by one manufacturerunder essentially the same manufacturing conditions.S3.2 Sampling shall be conducted in accordance with Sec-tion S1.S4. InspectionS4.1 ExaminationSamp
17、le platinum evaporating dishesand LevelAand commercial packaging inspection thereof shallbe examined in accordance with the classification of defectsand with MIL-STD-105.S4.1.1 Classification of defects shall be in accordance withTable S4.1 and Table S4.2.S4.2 Special Provisions:S4.2.1 Alternative i
18、nspection (including testing) proce-dures. The supplier may utilize any alternative inspectionprocedure that will ensure equal or better quality by submittinga written proposal with justification and obtaining writtenapproval from the government prior to instituting the proce-dure. In case of disput
19、e, the procedures of this specificationwill govern.S4.2.2 Supplemental EvidenceThe supplier shall provideevidence acceptable to the contracting officer that the require-ments of 4.1 and S7, have been satisfied.S5. Rejection CriteriaS5.1 The sample must pass all physical and chemicalrequirements when
20、 tested as specified to be accepted. Any testfailure will result in the rejection of the lot.S6. CertificationS6.1 Compliance with all stipulations of this specificationregarding fill, closure, marking and other requirements notinvolving tests will be certified by the supplier.TABLE 1 Dimensions of
21、Platinum Evaporating DishesTypeCapac-ity, mLTop InsideDiameter, mmHeight,mmWeight, gI 100 766 27.57.5 355II 50 54.5 2 27 2 19.5 5III 125 782 35.52 4210TABLE S4.1 Classification of Defects of Platinum DishesCategories DefectsCritical: none defined.Major: AQL 4.0 % defective.101 dimensions incorrect.1
22、02 damaged (scratches, dents or punctures).103 contamination (oil, grease, or foreign matter).104 marking illegible, incorrect, or missing.TABLE S4.2 Classification of Defects of Level A andCommercial PackagingCategories DefectsCritical: none defined.Major: AQL 2.5 % defective.101 unit container not
23、 as specified.102 cushioning not as specified.103 shipping container not as specified.104 shipping container closure not as specified.105 marking illegible, incorrect, or incomplete.E786 81 (2017)2S7. MarkingS7.1 Civil AgenciesIn addition to any special markingrequired by the contract or order, inte
24、rior packages and exteriorshipping containers shall be marked in accordance with Fed.Std. No. 123.S7.2 Military AgenciesIn addition to any special markingrequired by the contract or order, unit intermediate packagesand exterior shipping boxes shall be marked in accordance withMIL-STD-129. All contai
25、ners shall bear the name of the item,the national stock number, and the quantity contained thereinand “FRAGILEHANDLE WITH CARE.”S7.3 Commercial In addition to any special markingrequired by the contract or order, marking shall be accom-plished in accordance with MIL-STD-1188.ASTM International takes
26、 no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own resp
27、onsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addresse
28、d to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the
29、address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 81 (2017)3
