ASTM D4285-83(2012)
(Test Method)Standard Test Method for Indicating Oil or Water in Compressed Air
Standard Test Method for Indicating Oil or Water in Compressed Air
SIGNIFICANCE AND USE
Clean compressed air is required to prevent contamination of coating materials and surfaces being prepared for coating. This test method is a visual examination technique for determining oil or water in compressed air. Other types of contamination may require additional analytical techniques for detection.
SCOPE
1.1 This test method is used to determine the presence of oil or water in compressed air used for abrasive blast cleaning, air blast cleaning, and coating application operations.
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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. For specific hazard statements, see Section 4.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D4285 − 83 (Reapproved 2012)
Standard Test Method for
Indicating Oil or Water in Compressed Air
This standard is issued under the fixed designation D4285; 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 4.1.2 Allow air to discharge at operating conditions to
remove accumulated condensation in the system.
1.1 This test method is used to determine the presence of oil
or water in compressed air used for abrasive blast cleaning, air 4.2 Fasten the collector material to the rigid backing.
blast cleaning, and coating application operations. Precaution: Avoid personal contact with the air stream.
1.2 The values stated in inch-pound units are to be regarded
5. Sampling
as standard. No other units of measurement are included in this
standard. 5.1 Conduct the test on discharging air as close to the use
point as possible and after the inline oil and water separators.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Procedure
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6.1 Use either the absorbent or nonabsorbent collector.
bility of regulatory limitations prior to use. For specific hazard
6.2 Position the collector within 24 in. of the air-discharge
statements, see Section 4.
point, centered in the air stream.
2. Significance and Use
6.3 Adjust air discharge so that the collector remains intact
during the test. Allow air to discharge onto the collector for a
2.1 Clean compressed air is required to prevent contamina-
minimum of 1 min.
tion of coating materials and surfaces being prepared for
coating. This test method is a visual examination technique for
6.4 Visually examine the collector for the presence or
determining oil or water in compressed air. Other types of
absence of oil or water, or both.
contamination may require additional analytical techniques for
detection.
7. Interpretation of Results
7.1 Any indication of oil discoloration on the collector shall
3. Apparatus and Materials
be cause for rejection of the compressed air for use in abrasive
3.1 Absorbent Collector, such as white absorbent paper or
blast cleaning, air blast cleaning, and coating application
cloth and rigid backing for mounting absorbent collector, or
operations.
3.2 Nonabsorben
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