MIL-DTL-8971F
(Copies of these documents are available online at https://www.astm.org/ or from ASTM
International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.)
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)
ISO 10012
- Measurement management systems - Requirements
for measurement processes and measuring
equipment
(Copies of this document are available online at https://www.ansi.org/ or from American National
Standards Institute, 25 West 43rd Street, 4th Floor, New York, NY 10036.)
NATIONAL CONFERENCE OF STANDARDS LABS (NCSL)
NCSL Z540.3
- Requirements for the Calibration of Measuring and
Test Equipment
(Copies of this document are available online at https://www.ncsli.org/ or from National
Conference of Standards Labs, 1800 30th Street, Suite 305B, Boulder, CO 80301-1026.)
2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of
a conflict between the text of this document and the references cited herein, the text of this
document takes precedence. Nothing in this document, however, supersedes applicable laws and
regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Qualification. Electrodes furnished under this specification shall be products that are
authorized by the qualifying activity for listing on the applicable qualified products list (QPL)
3.2 Material. Electrodes shall be made from high-purity spectrometric grade graphite
and shall be as free as possible of the elements classified herein as impurities (see 3.8).
3.3 Electrode geometry and dimensions. The geometry and dimensions of the disk and
3.3.1 Disk electrodes. Disk electrodes shall be right circular cylinders having an outside
diameter of 0.492 inch and a height (thickness) of 0.200 inch. They shall have a 0.125-inch
diameter hole through the center that is concentric with the outer cylindrical surface. For
tolerances and eccentricity between the center hole and the outer cylindrical surface, see figure 1.
3
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