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This specification covers two types of metal ignition crucibles, nickel or platinum, complete with covers, for laboratory use. Two types of crucibles shall be classified according to their capacities: Type I is nickel with capacities of 100 mL and 250 mL and Type II is platinum with capacity of 20 mL. Type I are crucibles and covers which shall be made from 99.4% nickel, spun and hardened and Type II are crucibles and covers which shall be made from 99.9% platinum plus iridium, with the iridium content of not more than 0.4%. The crucibles shall have a standard shape with a flat base to give a firm and stable resting surface. The side wall shall form a sloping and convex surface extending up to the brim. Crucibles shall be of one-piece construction. Covers shall be flat, sunken in the center, and shall have an extension to serve as a handle. The sunken area in the center shall fit inside the crucible.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers two types of metal ignition crucibles, nickel or platinum, complete with covers, for laboratory use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B162 Specification for Nickel Plate, Sheet, and Strip
Federal StandardsFed. Std. No. 123 Marking for Shipment (Civil Agencies)
Military StandardsMIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes MIL-STD-1188 Commercial Packaging of Supplies and Equipment MIL-STD-129 Marking for Shipment and Storage
ICS Number Code 71.040.20 (Laboratory ware and related apparatus)
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ASTM E785-81(2017), Standard Specification for Crucibles, Ignition, Laboratory, Metal, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top