ASTM E786-81(2024)

Standard Specification for Dishes, Evaporating, Platinum

ABSTRACT
This specification covers platinum evaporating dishes suitable for water analysis and laboratory use. Platinum evaporating dishes shall be of the following types and capacities: Type I; Type II; and Type III.
SCOPE
1.1 This specification covers platinum evaporating dishes suitable for water analysis and laboratory use.

General Information

• Status: Published
• Publication Date: 31-Jan-2024
• ICS: 71.040.20 - Laboratory ware and related apparatus
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaces: ASTM E786-81(2017) - Standard Specification for Dishes, Evaporating, Platinum
• Effective Date: 01-Feb-2024

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E786 − 81 (Reapproved 2024)
Standard Specification for
Dishes, Evaporating, Platinum
This standard is issued under the fixed designation E786; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript 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. Scope 3.1.1 Type I—Shallow form without pour-out spout. Capac-
ity: 100 mL.
1.1 This specification covers platinum evaporating dishes
3.1.2 Type II—Regular form with pourout spout. Capacity:
suitable for water analysis and laboratory use.
50 mL.
1.2 This international standard was developed in accor-
3.1.3 Type III—125 mL.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Materials
Development of International Standards, Guides and Recom-
4.1 Unless otherwise specified, the platinum dishes shall be
mendations issued by the World Trade Organization Technical
made of 99.9 % platinum alloyed with not more than 0.4 %
Barriers to Trade (TBT) Committee.
iridium.
2. Referenced Documents
5. Dimensions, Mass, and Permissible Variations
2.1 Federal Standards:
5.1 Platinum evaporating dishes shall be either of two types:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
Type I, shallow dish without pourout spout, having slightly
2.2 Military Standards:
tapered sides and a flat bottom having a minimum thickness of
MIL-STD-105 Sampling Procedures and Tables for Inspec-
0.16 mm; or Type II, rounded bottom with a pourout spout
tion by Attributes
conforming to the dimensions in Table 1.
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-1188 Commercial Packaging of Supplies and
6. Workmanship
Equipment
6.1 Platinum evaporating dishes shall be free of defects
3. Classification
(scratches, dents, punctures) and contamination (grease, oil,
3.1 Types and Capacities—Platinum evaporating dishes
foreign matter) that detract from their appearance or that will
shall be of the following types and capacities as specified (see
impair their serviceability.
S2.1).
7. Marking
This specification is under the jurisdiction of ASTM Committee E41 on
7.1 Platinum evaporating dishes shall be permanently and
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
legibly marked with the name or registered trademark of the
Laboratory Ware and Supplies.
manufacturer.
Current edition approved Feb. 1, 2024. Published February 2024. Originally
approved in 1981. Last previous edition approved in 2017 as E786 – 81 (2017).
DOI: 10.1520/E0786-81R24. 8. Keywords
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
8.1 dishes; evaporating; platinum
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 19428-2959. United States
E786 − 81 (2024)
TABLE 1 Dimensions of Platinum Evaporating Dishes
Capac- Top Inside Height,
Type Weight, g
ity, mL Diameter, mm mm
I 100 76 ± 6 27.5 ± 7.5 35 ± 5
II 50 54.5 ± 2 27 ± 2 19.5 ± 5
III 125 78 ± 2 35.5 ± 2 42 ± 10
SUPPLEMENTARY REQUIREMENTS
The following supplementary requirements are binding when this specification is used by the
Department of Defense and the Federal Government for the procurement of platinum evaporating
dishes.
TABLE S4.1 Classification of Defects of Platinum Dishes
S1. Sampling
Categories Defects
S1.1 Sampling for nondestructive examination shall be
Critical: none defined.
conducted in accordance with MIL-STD-105.
Major: AQL 4.0 % defective.
101 dimensions incorrect.
S2. Ordering Information
102 damaged (scratches, dents or punctures).
103 contamination (oil, grease, or foreign matter).
S2.1 Procurement documents should specify the following:
104 marking illegible, incorrect, or missing.
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
TABLE S4.2 Classification of Defects of Level A and
Commercial Packaging
dish required, and
S2.1.4 Material if other than as specified. Categories Defects
S2.2 Supplier’s Responsibility—The supplier is responsible Critical: none defined.
Major: AQL 2.5 % defective.
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