ASTM D3891-96

Standard Practice for Preparation of Glass Panels for Testing Paint, Varnish, Lacquer, and Related Products

SCOPE
1.1 This practice covers the preparation of glass panels for subsequent testing of paint, varnish, lacquer, and related products.  
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.

General Information

• Status: Historical
• Publication Date: 31-Dec-1995
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.27 - Accelerated Testing

Relations

• Replaced By: ASTM D3891-96(2002)e1 - Standard Practice for Preparation of Glass Panels for Testing Paint, Varnish, Lacquer, and Related Products
• Effective Date: 10-May-1996

Standards Content (Sample)

Designation: D 3891 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Preparation of Glass Panels for Testing Paint, Varnish,
1
Lacquer, and Related Products
This standard is issued under the fixed designation D 3891; 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 (e) indicates an editorial change since the last revision or reapproval.
windows. It is produced by floating a ribbon of red hot glass on a bath of
1. Scope
molten tin. The sides of the float glass exposed to tin and to air have
1.1 This practice covers the preparation of glass panels for
somewhat different characteristics. The tin side contains tin diffused into
subsequent testing of paint, varnish, lacquer, and related
the glass structure. Paint generally releases more easily from the tin side,
2
products.
but it may be contaminated with tin, which could affect chemical analysis.
1.2 This standard does not purport to address all of the Paint generally adheres better to the air side. The sides can be distin-
guished by exposing the glass to a UV-A light (“black light”): the air side
safety concerns, if any, associated with its use. It is the
will appear clear, and the tin side will appear frosted. Depending on the
responsibility of the user of this standard to establish appro-
application, the user may want to choose which side is appropriate for that
priate safety and health practices and determine the applica-
test, and make sure that the same side is coated on every panel. Note
bility of regulatory limitations prior to use.
however, that if the window glass used is not float glass (for example,
plate glass), both sides of the glass will be the same.
2. Referenced Documents
4.3.2 Clear Plate Glass, not less than 5 mm thick.
2.1 ASTM Standards:
4.3.3 Plate Glass that has been ground uniformly on one
3
D 364 Specification for Industrial Grade Xylene
side with 1F carborundum.
4
D 1152 Specification for Methanol (Methyl Alcohol)
4.3.4 Black Structural Glass, one side of which has been
5
D 1193 Specification for Reagent Water
polished to a smooth, high-gloss surface.
4.3.5 White Structural Glass, one side of which has been
3. Significance and Use
polished to a smooth, high gloss.
3.1 The procedures described in this practice are designed to
provide uniform glass panels for testing of paint, varnish,
5. Method of Preparation
lacquer, conversion coatings and related products.
5.1 New Panels—Using a clean lintless cloth, wipe the
panel with a solvent mixture consisting of equal volumes of V
4. Reagents and Materials
M & P naphtha and xylene or of 3 volumes of V M & P naphtha
4.1 Purity of Water—Unless otherwise indicated, references
and 1 volume of 2-methoxypropanol or with water. When all
to water shall be understood to mean reagent water conforming
soluble and loosely adhering soil has been washed off, flush
to Type IV of Specification D 1193.
with clean solvent. Allow panels to dry at room temperature or
4.2 Solvents—Varnish Makers’ and Painters (V M & P)
force dry at a temperature no higher than 300°F (150°C). After
naphtha, xylene, 2-methoxypropanol, and methanol complying
cooling to room temperature, rub with a clean lintless cloth if
with the appropriate specifications (see Specifications D 364
necessary.
and D 1152).
5.1.1 The surface after cleaning shall be water-break free.
4.3 Glass of the following types may be specified in the
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