ASTM F22-02

Standard Test Method for Hydrophobic Surface Films by the Water-Break Test

SCOPE
1.1 This test method covers the detection of the presence of hydrophobic (nonwetting) films on surfaces and the presence of hydrophobic organic materials in processing ambients. When properly conducted, the test will enable detection of molecular layers of hydrophobic organic contaminants. On very rough or porous surfaces, the sensitivity of the test may be significantly decreased.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses are for information only.
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.

General Information

• Status: Historical
• Publication Date: 09-Oct-2002
• ICS: 25.220.20 - Surface treatment
• Technical Committee: E21 - Space Simulation and Applications of Space Technology
• Drafting Committee: E21.05 - Contamination

Relations

• Replaces: ASTM F22-65(1998) - Standard Test Method for Hydrophobic Surface Films by the Water-Break Test
• Effective Date: 10-Oct-2002
• Replaced By: ASTM F22-02(2007) - Standard Test Method for Hydrophobic Surface Films by the Water-Break Test
• Effective Date: 01-Apr-2007
• Referred By: ASTM F2664-19e1 - Standard Guide for Assessing the Attachment of Cells to Biomaterial Surfaces by Physical Methods
• Effective Date: 10-Oct-2002
• Referred By: ASTM F2661-07(2022) - Standard Test Method for Determining the Tribological Behavior and the Relative Lifetime of a Fluid Lubricant using the Spiral Orbit Tribometer
• Effective Date: 10-Oct-2002
• Referred By: ASTM D2625-20 - Standard Test Method for Endurance (Wear) Life and Load-Carrying Capacity of Solid Film Lubricants (Falex Pin and Vee Method)
• Effective Date: 10-Oct-2002
• Referred By: ASTM D2510-22 - Standard Test Method for Adhesion of Solid Film Lubricants
• Effective Date: 10-Oct-2002
• Referred By: ASTM D2201-23 - Standard Practice for Preparation of Zinc-Coated and Zinc-Alloy-Coated Steel Panels for Testing Paint and Related Coating Products
• Effective Date: 10-Oct-2002
• Referred By: ASTM F21-20 - Standard Test Method for Hydrophobic Surface Films by the Atomizer Test
• Effective Date: 10-Oct-2002
• Referred By: ASTM A380/A380M-17 - Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems
• Effective Date: 10-Oct-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F22–02
Standard Test Method for
1
Hydrophobic Surface Films by the Water-Break Test
ThisstandardisissuedunderthefixeddesignationF 22;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Significance and Use
1.1 This test method covers the detection of the presence of 5.1 The water-break test as described in this test method is
hydrophobic (nonwetting) films on surfaces and the presence nondestructive and may be used for control and evaluation of
of hydrophobic organic materials in processing ambients. processes for the removal of hydrophobic contaminants. The
When properly conducted, the test will enable detection of test may also be used for the detection and control of
molecular layers of hydrophobic organic contaminants. On hydrophobic contaminants in processing ambients. For this
veryroughorporoussurfaces,thesensitivityofthetestmaybe application, a surface free of hydrophobic films is exposed to
significantly decreased. the ambient and subsequently tested.
1.2 The values stated in SI units are to be regarded as the
6. Interferences
standard. The inch-pound values given in parentheses are for
6.1 Loss of sensitivity may result from either of the follow-
information only.
1.3 This standard does not purport to address all of the ing factors:
6.1.1 The presence of hydrophilic substances on the surface
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- to be tested, in the test equipment, or in the test materials, or
6.1.2 An unusually rough or porous surface condition.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
7. Apparatus
2. Referenced Documents
7.1 Overflow Container, such as a glass beaker.
2.1 ASTM Standards: 7.2 Low Power Microscope,(5to503) and light source for
observation of small piece parts.
D 351 Classification for Natural Muscovite Block Mica and
2
Thins Based on Visual Quality
8. Reagents and Materials
3. Terminology
8.1 Purity of Reagents—Reagent grade chemicals shall be
used in all tests. Unless otherwise indicated, it is intended that
3.1 Definitions:
3.1.1 hydrophilic—having a strong affinity for water, wet- all reagents shall conform to the specifications of the Commit-
3
tee onAnalytical Reagents of theAmerican Chemical Society,
table.
3.1.2 hydrophobic—having little affinity for water, nonwet- where such specifications are available. Other grades may be
used, provided it is first ascertained that the reagent is of
table.
sufficiently high purity to permit its use without lessening the
4. Summary of Test Method
accuracy of the determination.
4.1 The water-break test is performed by withdrawing the 8.2 Purity of Water—Deionized or distilled water is pre-
surface to be tested, in a vertical position, from a container ferred. Water of higher ionic content may render the test
overflowing with water. The interpretation of the test is based destructive. The water used must be free of hydrophobic and
upon the pattern of wetting. In the absence of hydrophobic hydrophilic substances.
films, the draining water layer will remain as a film over the
NOTE 1—The freedom of the water from hydrophobic and hydrophilic
surface. In areas where hydrophobic materials are present on
contamination may be determined in accordance with Section 9.
the surface, the draining water layer will break up into a
8.3 Acetone.
discontinuous film within one minute.
1 3
This test method is under the jurisdiction of ASTM Committee E21 on Space Reagent Chemicals, American Chemical Society Specifications, American
Simulation andApplications of Space Technology and is the direct responsibility of Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Subcommittee E21.05 on Contamination. listed by the American Chemical Society, see Analar Standards for Laboratory
Current edition approved Oct. 10, 2002. Published November 2002. Originally Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
published as F22 – 62 T. Last previous edition F22 – 65 (1998). and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
2
Annual Book of ASTM Standards, Vol 10.01. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F22–02
8.4 Mica Blanks,preferably25by50by0.38mm(1by2by 10.2 Testing of Ambients—Expose a freshly cleaved mica
0.015 in.) or larger, having minimum ASTM Quality V6 as surface to the ambient and subse
...