ASTM D7393-07
(Practice)Standard Practice for Indicating Oil in Abrasives
Standard Practice for Indicating Oil in Abrasives
SCOPE
1.1 This practice is used to determine the presence of oil in abrasives used for abrasive blast cleaning.
1.2 The procedure can be used in the laboratory, field or fabrication shop.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, 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: D7393 − 07
StandardPractice for
Indicating Oil in Abrasives
This standard is issued under the fixed designation D7393; 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.
1. Scope affect adhesion of the coating applied over it, and ultimate
performance of the coating system.
1.1 This practice is used to determine the presence of oil in
abrasives used for abrasive blast cleaning. 4.2 Oil in abrasives is one of the cleanliness tests required
for mineral and slag abrasives in SSPC-AB1, for recycled
1.2 The procedure can be used in the laboratory, field or
ferrous abrasives in SSPC-AB2, and for new ferrous abrasives
fabrication shop.
in SSPC-AB3.
1.3 The values stated in SI units are to be regarded as the
4.3 Other contaminants in abrasive such as chemical con-
standard. The values given in parentheses are for information
taminants or particulate matter require other methods for
only.
detection such as Test Method D4940 for ionic contaminants.
1.4 This standard does not purport to address all of the
The ratio of abrasive to water is different for this test, so the
safety concerns, if any, associated with its use. It is the
solution from evaluating the oil in abrasive should not be used
responsibility of the user of this standard to establish appro-
for Test Method D4940.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Apparatus and Materials
2. Referenced Documents
5.1 Container—Clear jar or bottle capable of holding 250
ml (8.5 fl oz) or more and with a lid that is capable of sealing
2.1 ASTM Standards:
the contents.
D4940 Test Method for Conductimetric Analysis of Water
Soluble Ionic Contamination of Blasting Abrasives
5.2 Water—Potable.
2.2 SSPC Standards:
SSPC-AB1 Mineral and Slag Abrasives
6. Procedure
SSPC-AB2 Cleanliness of Recycled Ferrous Metallic Abra-
6.1 Place a sample of the abrasive in a clean container to
sive
about half its height.
SSPC-AB3 Ferrous Metallic Abrasive
6.2 Add water to a level at least 2.5 cm (1 in.) above the top
3. Summary of Practice
of the abrasive.The water temperature shall be between 20 and
3.1 A sample of the abrasive is placed in a container, 35°C (68 and 95°F).
covered with water and vigorously shaken. The presence of an
6.3 Cover the container and shake vigorously for one min.
oil sheen or oil drops on the surface is cause for rejection of the
6.4 Remove the cover from the container and let it sit for 5
supply being tested.
min.
4. Significance and Use
6.5 Examine the surface of the water for oil droplets or oil
4.1 Oil in abrasives can be transferred to the surface being
sheen.
cleaned, thus contaminating it. This can cause film defects,
...
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