ASTM E1059-91(1996)
(Practice)Standard Practice for Designating Shapes and Sizes of Nongraphite Counter Electrodes
Standard Practice for Designating Shapes and Sizes of Nongraphite Counter Electrodes
SCOPE
1.1 This practice describes a number of specific nongraphite counter electrode shapes and sizes that are useful in spectrochemical analysis.
1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: E 1059 – 91 (Reapproved 1996)
Standard Practice for
Designating Shapes and Sizes of Nongraphite Counter
Electrodes
This standard is issued under the fixed designation E 1059; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope and provides dimensional specifications.
1.1 This practice describes a number of specific nongraphite
4. Significance and Use
counter electrode shapes and sizes that are useful in spectro-
4.1 This practice is intended as a reference for spectro-
chemical analysis.
chemical methods that utilize nongraphite electrodes. One of
1.2 This standard does not purport to address all of the
the electrode shapes in this practice should be employed and
safety concerns, if any, associated with its use. It is the
referenced in a method. If this is not possible, the method
responsibility of the user of this standard to establish appro-
should include the specifications for the electrode used.
priate safety and health practices and determine the applica-
4.2 This practice should be referenced in a method by
bility of regulatory limitations prior to use.
including a statement such as the following in the section on
2. Terminology Reagents and Materials:
Counter Electrode—The electrode shall conform to Type
2.1 Definition:
(insert the Type designation from this practice) as shown in
2.1.1 counter electrode—the electrode, in any analytical
Practice E 1059.
pair, that is used opposite to the self-electrode or supporting
electrode and that is not composed of the specimen to be
5. Materials and Dimensions
analyzed.
5.1 The materials and dimensions of the counter electrodes
3. Summary of Practice are given in Fig. 1, along with the tolerances where applicable.
5.1.1 The composition of these electrodes, if they have been
3.1 The practice designates nongraphite counter electrodes
established, are given in Fig. 1.
1 6. Keywords
This practice is under the jurisdiction of ASTM Committee E-1 on Analytical
Chemistry for Metals, Ores and Related Materials and is the direct responsibility of
6.1 counter electrodes; electrodes
Subcommittee E01.20 on Fundamental Practices.
Current edition approved Sept. 15, 1991. Published November 1991. Originally
published
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Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging bore surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 2 Solid Forgings
Note 1: Sensitivity multiplication factor such that a 10 % indication at the forging centerline surface will be equivalent to a 1/8 in. [3 mm] diameter flat bottom hole. Inspection frequency: 2.0 MHz or 2.25 MHz. Material velocity: 2.30 in./s × 105 in./s [5.85 cm/s × 105 cm/s].
FIG. 3 Conversion Factors to Be Used in Conjunction with Fig. 1 and Fig. 2 if a Change in the Reference Reflector Diameter is Required
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