ASTM G136-03

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Designation:G136–03
Standard Practice for
Determination of Soluble Residual Contaminants in
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Materials by Ultrasonic Extraction
This standard is issued under the fixed designation G 136; 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 3.1.1 contaminant (contamination), n—unwantedmolecular
and particulate matter that could affect or degrade the perfor-
1.1 This practice may be used to extract nonvolatile and
mance of the components upon which they reside.
semivolatile residues from materials such as new and used
3.1.2 contaminate, v—a process of contaminating.
gloves, new and used wipes, component soft goods, and so
3.1.3 nonvolatile residue (NVR), n—residual molecular and
forth. When used with proposed cleaning materials (wipes,
particulate matter remaining following the filtration and con-
gloves, and so forth), this practice may be used to determine
trolled evaporation of liquid containing contaminants.
the potential of the proposed solvent or other fluids to extract
3.1.4 particle (particulate contaminant), n—a piece of mat-
contaminants (plasticizers, residual detergents, brighteners,
terinasolidstatewithobservablelength,width,andthickness.
and so forth.) and deposit them on the surface being cleaned.
3.1.4.1 Discussion—The size of a particle is usually defined
1.2 This practice is not suitable for the evaluation of
by its greatest dimension and is specified in micrometres.
particulate contamination.
3.1.5 molecular contaminant (non-particulate contamina-
1.3 The values stated in SI units are standard.
tion), n—the molecular contaminant may be in a gaseous,
1.4 This standard does not purport to address all of the
liquid, or solid state.
safety concerns, if any, associated with its use. It is the
3.1.5.1 Discussion—A molecular contaminant may be uni-
responsibility of the user of this standard to establish appro-
formly or nonuniformly distributed, or be in the form of
priate safety and health practices and determine the applica-
droplets. Molecular contaminants account for most of the
bility of regulatory limitations prior to use.
NVR.
2. Referenced Documents
3.1.6 degas, v—the process of removing gases from a
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liquid.
2.1 ASTM Standards:
D 1193 Specification for Reagent Water
4. Summary of Practice
E 1235 TestMethodforGravimetricDeterminationofNon-
4.1 A material, glove, hand wipe, and so forth, is placed in
volatile Residue (NVR) in Environmentally Controlled
a container containing the test fluid. This container is then
Areas for Spacecraft
placed in an ultrasonic cleaning bath and treated for a given
F 324 Test Method for Nonvolatile Residue of Volatile
period of time at the recommended temperature for the test
Cleaning Solvents Using the Solvent Purity Meter
fluid. This results in either a solution if the contaminant is
F 331 Test Method for Nonvolatile Residue of Halogenated
soluble in the test fluid or an emulsion if the contaminant is not
SolventExtractfromAerospaceComponentsUsingRotary
soluble in the test fluid.The test fluid may then be analyzed for
Flash Evaporator
nonvolatile residue that was extracted from the test specimen.
3. Terminology
4.1.1 In the case of aqueous-based agents, the material may
be treated in accordance with Specification D 1193 Type II
3.1 Definitions of Terms Specific to This Standard:
water or Type II water containing an extracting agent.
4.1.1.1 When Type II water is used, the water and material
may be analyzed without further treatment.Typical methods of
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This practice is under the jurisdiction of ASTM Committee G04 on Compat-
analysis may include weighing the material before and after
ibility and Sensitivity of Materials in Oxygen Enriched Atmospheres and is the
treatment or more sophisticated analytical procedures such as
direct responsibility of Subcommittee G04.02 on Recommended Practices.
total carbon (TC) or high-pressure liquid chromatography.
Current edition approved Sept. 10, 2003. Published December 2003. Originally
approved in 1995. Last previous edition approved in 1996 as G 136 – 96.
4.1.1.2 When cleaning agents are used, the materials are
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
rinsed with Type II water after the removal from the cleaning
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
bath and then ultrasonically cleaned in reagent water to ensure
Standardsvolume information, refer to the standard’s Document Summary page on
the ASTM website. the removal of the extracting agent. Typical methods of
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