Astm Standard; Specimen Mounting - Keithley 8009 Instruction Manual

Section 2: Operation

ASTM standard

Methods, recommendations, and calculations used in this manual to make resistivity measurements
are based on the following ASTM standard:
American Society for Testing and Materials, Standard Methods of Test for Electrical Resistance of
Insulation Materials, ASTM Designation D257

Specimen mounting

The minimum and maximum sample sizes are listed in the specifications.
Do not handle the specimen with bare fingers. Body oil will provide a conductive path and may
corrupt the measurement. Acetate rayon gloves are recommended to prevent the spread of body oil.
For best results, clean the specimen surfaces with an alcohol and ether mixture or other suitable
solvent.
To mount the specimen in the 8009:
1. Remove the protective spacer.
The top electrode in the 8009 is permanently attached to the top cover. A protective spacer is
provided with the 8009 to protect the electrodes (this spacer can be used for a functional check of
the 8009).
2. Center the specimen between the top and bottom electrodes of the 8009. Make sure there are no
conductive paths between the electrodes other than those through the specimen.
3. Close the lid of the test fixture and secure the latch.
4. When your testing is complete, reinstall the protective spacer to protect the electrode surfaces
from nicks and scratches in storage.
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Model 8009 Resistivity Test Fixture Instruction Manual
8009-901-01 Rev. D / May 2019