ASTM E785-81(2017)
(Specification)Standard Specification for Crucibles, Ignition, Laboratory, Metal
Standard Specification for Crucibles, Ignition, Laboratory, Metal
ABSTRACT
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.
SCOPE
1.1 This specification covers two types of metal ignition crucibles, nickel or platinum, complete with covers, for laboratory use.
General Information
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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: E785 −81 (Reapproved 2017)
Standard Specification for
Crucibles, Ignition, Laboratory, Metal
This standard is issued under the fixed designation E785; 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 3.1.2 Type II—Platinum.
Capacity: 20 mL
1.1 This specification covers two types of metal ignition
crucibles, nickel or platinum, complete with covers, for labo-
4. Materials
ratory use.
4.1 Type I—Crucibles and covers shall be made from
99.4 % nickel, spun and hardened in conformance with Speci-
2. Referenced Documents
fication B162.
2.1 ASTM Standards:
4.2 Type II—Crucibles and covers shall be made from
B162 Specification for Nickel Plate, Sheet, and Strip
99.9 % platinum plus iridium, with the iridium content of not
2.2 Federal Standards:
more than 0.4 %.
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
5. Physical Requirements
2.3 Military Standards:
MIL-STD-105 Sampling Procedures and Tables for Inspec-
5.1 Crucibles shall have a standard shape with a flat base to
tion by Attributes
give a firm and stable resting surface. The side wall shall form
MIL-STD-129 Marking for Shipment and Storage
a sloping and convex surface extending up to the brim.
MIL-STD-1188 Commercial Packaging of Supplies and
Crucibles shall be of one-piece construction.
Equipment
5.2 Covers shall be flat, sunken in the center, and shall have
an extension to serve as a handle.The sunken area in the center
3. Classification
shall fit inside the crucible.
3.1 Types and Capacities—The crucibles shall be furnished
6. Dimensions, Mass, and Permissible Variations
in one or more of the following types or capacities as specified
(see S2.1).
6.1 TypeI crucibles and covers shall conform to the require-
3.1.1 Type I—Nickel.
ments of Table 1.
Capacity: 100 mL
6.2 Type II Crucibles and Covers:
250 mL
6.2.1 Type II crucibles shall conform to the requirements of
Table 2.
6.2.2 Type II covers shall conform to the requirements of
This specification is under the jurisdiction of ASTM Committee E41 on
Table 3.
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
Laboratory Ware and Supplies.
7. Workmanship
Current edition approved Jan. 1, 2017. Published February 2017. Originally
approved in 1981. Last previous edition approved in 2011 as E785 – 81 (2011).
7.1 Crucibles and covers shall be free of defects (scratches,
DOI: 10.1520/E0785-81R17.
dents, discolorations) or contamination (grease, oil, foreign
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM matter) that detract from their appearance or that impair their
Standards volume information, refer to the standard’s Document Summary page on
serviceability.
the ASTM website.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
8. Keywords
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.dodssp.daps.mil. 8.1 crucibles; ignition; nickel; platinum
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E785 − 81 (Reapproved 2017)
TABLE 1 Crucible Dimensions (Type I)
A
Wall
A OD Exclusive A B A
Capacity, Outside
Bottom OD , Length incl. Inside Diameter of Wall Thickness,
B
Height, mm Thickness , of
mm Handle, mm Sunken Section, mm mm
mL Diameter, mm
mm Handle, mm
100 60 30 64 0.625 67 92 58 0.625
250 83 50 83 0.625 92 116 83 0.625
A
Tolerance ± 2 mm.
B
Tolerance ± 0.25 mm.
TABLE 2 Crucible Dimensions (Type II)
Capacity, Top Inside Bottom Inside Thickness of Thickness of
Height, mm Weight, g
mL Diameter, mm Diameter, mm Side, mm Bottom, mm
20 32.4±0.8 19±1.0 34.5±2.0 0.22±0.05 0.25±0.05 16±1.0
TABLE 3 Cover Requirements (Type II)
Outside Diameter
Length Including Diameter of Sun- Depth of Sunken
Thickness, mm Excluding Handle, Weight, g
Handle, mm ken Section, mm Section, mm
mm
0.137±0.01 36.4±0.2 47±0.5 31.5±0.5 3.0±0.3
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.
S1. Sampling S2.3.1.2 Crucibles, not otherwise indexed. Motor volume
minimum weight 24 000 lb.
S1.1 Sampling for nondestructive examination shall be
S2.3.2 TypeII–Platinum.Nottakenbyfreight.ShipviaUPS
conducted in accordance with MIL-STD-105.
or parcel post.
S2. Ordering Information
S3. Lotting and Sampling
S2.1 Procurement documents should specify the following:
S3.1 A lot shall consist of the crucibles and covers of the
S2.1.1 Title, number, and date of this ASTM specification.
same type and capacity offere
...
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E785 − 81 (Reapproved 2017)
Standard Specification for
Crucibles, Ignition, Laboratory, Metal
This standard is issued under the fixed designation E785; 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 3.1.2 Type II—Platinum.
Capacity: 20 mL
1.1 This specification covers two types of metal ignition
crucibles, nickel or platinum, complete with covers, for labo-
4. Materials
ratory use.
4.1 Type I—Crucibles and covers shall be made from
2. Referenced Documents
99.4 % nickel, spun and hardened in conformance with Speci-
fication B162.
2.1 ASTM Standards:
B162 Specification for Nickel Plate, Sheet, and Strip
4.2 Type II—Crucibles and covers shall be made from
2.2 Federal Standards:
99.9 % platinum plus iridium, with the iridium content of not
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
more than 0.4 %.
2.3 Military Standards:
MIL-STD-105 Sampling Procedures and Tables for Inspec-
5. Physical Requirements
tion by Attributes
5.1 Crucibles shall have a standard shape with a flat base to
MIL-STD-129 Marking for Shipment and Storage
give a firm and stable resting surface. The side wall shall form
MIL-STD-1188 Commercial Packaging of Supplies and
a sloping and convex surface extending up to the brim.
Equipment
Crucibles shall be of one-piece construction.
3. Classification
5.2 Covers shall be flat, sunken in the center, and shall have
an extension to serve as a handle. The sunken area in the center
3.1 Types and Capacities—The crucibles shall be furnished
shall fit inside the crucible.
in one or more of the following types or capacities as specified
(see S2.1).
6. Dimensions, Mass, and Permissible Variations
3.1.1 Type I—Nickel.
Capacity: 100 mL
6.1 Type I crucibles and covers shall conform to the require-
250 mL
ments of Table 1.
6.2 Type II Crucibles and Covers:
6.2.1 Type II crucibles shall conform to the requirements of
This specification is under the jurisdiction of ASTM Committee E41 on
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
Table 2.
Laboratory Ware and Supplies.
6.2.2 Type II covers shall conform to the requirements of
Current edition approved Jan. 1, 2017. Published February 2017. Originally
Table 3.
approved in 1981. Last previous edition approved in 2011 as E785 – 81 (2011).
DOI: 10.1520/E0785-81R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7. Workmanship
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
7.1 Crucibles and covers shall be free of defects (scratches,
the ASTM website.
dents, discolorations) or contamination (grease, oil, foreign
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
matter) that detract from their appearance or that impair their
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.dodssp.daps.mil. serviceability.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E785 − 81 (Reapproved 2017)
8. Keywords
8.1 crucibles; ignition; nickel; platinum
E785 − 81 (Reapproved 2017)
TABLE 1 Crucible Dimensions (Type I)
A
Wall
OD Exclusive
A A B A
Capacity, Outside
Bottom OD , Length incl. Inside Diameter of Wall Thickness,
B
Height, mm of
Thickness ,
mL Diameter, mm mm Handle, mm Sunken Section, mm mm
Handle, mm
mm
100 60 30 64 0.625 67 92 58 0.625
250 83 50 83 0.625 92 116 83 0.625
A
Tolerance ± 2 mm.
B
Tolerance ± 0.25 mm.
TABLE 2 Crucible Dimensions (Type II)
Capacity, Top Inside Bottom Inside Thickness of Thickness of
Height, mm Weight, g
mL Diameter, mm Diameter, mm Side, mm Bottom, mm
20 32.4 ± 0.8 19 ± 1.0 34.5 ± 2.0 0.22 ± 0.05 0.25 ± 0.05 16 ± 1.0
TABLE 3 Cover Requirements (Type II)
Outside Diameter
Length Including Diameter of Sun- Depth of Sunken
Thickness, mm Excluding Handle, Weight, g
Handle, mm ken Section, mm Section, mm
mm
0.137 ± 0.01 36.4 ± 0.2 47 ± 0.5 31.5 ± 0.5 3.0 ± 0.3
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.
S1. Sampling S2.3.1.2 Crucibles, not otherwise indexed. Motor volume
minimum weight 24 000 lb.
S1.1 Sampling for nondestructive examination shall be
S2.3.2 Type II–Platinum. Not taken by freight. Ship via UPS
conducted in accordance with MIL-STD-105.
or parcel post.
S2. Ordering Information
S3. Lotting and Sampling
S2.1 Procurement documents should specify the following:
S3.1 A lot shall consist of the crucibles and covers of the
S2.1.1 Title, number, and date of this ASTM specification.
same type and capacity offered for acceptance at one time,
S2.1.
...
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 the previous version. Because
it 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 version
of the standard as published by ASTM is to be considered the official document.
Designation: E785 − 81 (Reapproved 2011) E785 − 81 (Reapproved 2017)
Standard Specification for
Crucibles, Ignition, Laboratory, Metal
This standard is issued under the fixed designation E785; 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
1.1 This specification covers two types of metal ignition crucibles, nickel or platinum, complete with covers, for laboratory use.
2. Referenced Documents
2.1 ASTM Standards:
B162 Specification for Nickel Plate, Sheet, and Strip
2.2 Federal Standards:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
2.3 Military Standards:
MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-1188 Commercial Packaging of Supplies and Equipment
3. Classification
3.1 Types and Capacities—The crucibles shall be furnished in one or more of the following types or capacities as specified (see
S2.1).
3.1.1 Type I—Nickel.
Capacity: 100 mL
250 mL
3.1.2 Type II—Platinum.
Capacity: 20 mL
4. Materials
4.1 Type I—Crucibles and covers shall be made from 99.4 % nickel, spun and hardened in conformance with Specification
B162.
4.2 Type II—Crucibles and covers shall be made from 99.9 % platinum plus iridium, with the iridium content of not more than
0.4 %.
5. Physical Requirements
5.1 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.
5.2 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 specification is under the jurisdiction of ASTM Committee E41 on Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
ApparatusLaboratory Ware and Supplies.
Current edition approved Dec. 1, 2011Jan. 1, 2017. Published December 2011February 2017. Originally approved in 1981. Last previous edition approved in 20062011
as E785 – 81 (2006).(2011). DOI: 10.1520/E0785-81R11.10.1520/E0785-81R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available 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 19428-2959. United States
E785 − 81 (Reapproved 2017)
6. Dimensions, Mass, and Permissible Variations
6.1 Type I crucibles and covers shall conform to the requirements of Table 1.
6.2 Type II Crucibles and Covers:
6.2.1 Type II crucibles shall conform to the requirements of Table 2.
6.2.2 Type II covers shall conform to the requirements of Table 3.
7. Workmanship
7.1 Crucibles and covers shall be free of defects (scratches, dents, discolorations) or contamination (grease, oil, foreign matter)
that detract from their appearance or that impair their serviceability.
8. Keywords
8.1 crucibles; ignition; nickel; platinum
TABLE 1 Crucible Dimensions (Type I)
A
Wall
A OD Exclusive A B A
Capacity, Outside
Bottom OD , Length incl. Inside Diameter of Wall Thickness,
B
Height, mm Thickness , of
mm Handle, mm Sunken Section, mm mm
mL Diameter, mm
mm Handle, mm
100 60 30 64 0.625 67 92 58 0.625
250 83 50 83 0.625 92 116 83 0.625
A
Tolerance ± 2 mm.
B
Tolerance ± 0.25 mm.
E785 − 81 (Reapproved 2017)
TABLE 2 Crucible Dimensions (Type II)
Capacity, Top Inside Bottom Inside Thickness of Thickness of
Height, mm Weight, g
mL Diameter, mm Diameter, mm Side, mm Bottom, mm
20 32.4 ± 0.8 19 ± 1.0 34.5 ± 2.0 0.22 ± 0.05 0.25 ± 0.05 16 ± 1.0
TABLE 3 Cover Requirements (Type II)
Outside Diameter
Length Including Diameter of Sun- Depth of Sunken
Thickness, mm Excluding Handle, Weight, g
Handle, mm ken Section, mm Section, mm
mm
0.137 ± 0.01 36.4 ± 0.2 47 ± 0.5 31.5 ± 0.5 3.0 ± 0.3
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.
S1. Sampling
S1.1 Sampling for nondestructive examination shall be conducted in accordance with MIL-STD-105.
S2. Ordering Information
S2.1 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 of crucible required, and
S2.1.4 Numbe
...
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