Standard Guide for
Foam Stability of Hand Dishwashing Detergents1
This standard is issued under the fixed designation D 4009; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1.1 This guide provides guidelines for several techniques of
measuring the foam stability of light-duty hand dishwashing
detergent products in the presence of artificially applied testfood soils. It is intended as a laboratory screening test to aid in
the formulation of products, for quality control, and as a basis
between the formulator and supplier in standardizing specific
1.2 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.
2. Summary of Guide
2.1 Soiled dinner plates are washed by hand in solutions of
hand dishwashing detergents under standardized conditions
until an endpoint of near-disappearance of the form is reached,
after which the number of plates washed is compared to the
a number of plates were washed using a standard product.
3. Significance and Use
3.1 The guide, as now constituted, is not suitable for ranking
of hand dishwashing products, since no basis is available at this
time for correlation of the foam stability of these products
using any particular food soil or combination of soils with
consumers’ ranking of performance.
3.2 The relative foam stability ranking of hand dishwashing
detergent products will vary greatly depending on the type of
food soils used in the test. Therefore, the selection of the standard
food soil to be used in a test shall be made by agreement
between the interested parties on the basis of experience.
3.3 This laboratory screening guide includes flexibility in
several areas so as to allow its use by the maximum number of
laboratories, without the purchase of significant additional equipment. It should be recognized, therefore, that differences in
specific equipment may result in a reduced level of interlaboratory and interoperator precision, and such results must be
evaluated with caution.
Click below to download Astm D 4009 – 92 (Reapproved 1997) pdf free
Click here to download Astm D 4008 – 95 (Reapproved 2003) Pdf Free Download