ASTM D5068-04(2009)
(Practice)Standard Practice for Preparation of Paint Brushes for Evaluation
Standard Practice for Preparation of Paint Brushes for Evaluation
SIGNIFICANCE AND USE
Until the paint brush is fully conditioned and wetted with paint, only part of the paint loaded onto the brush can be transferred to the surface being painted. By properly preparing the brush before use, the amount of paint delivered to the surface can be made more uniform and reflect real use.
SCOPE
1.1 This practice describes the preparation of paint brushes for evaluation.
1.2 This practice is applicable to paint brushes 50 to 100 mm (2 to 4 in.) in width.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address 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.
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Designation: D5068 − 04 (Reapproved2009)
Standard Practice for
Preparation of Paint Brushes for Evaluation
This standard is issued under the fixed designation D5068; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Apparatus
1.1 This practice describes the preparation of paint brushes 5.1 Container, to hold paint, for example, a quart can.
for evaluation.
5.2 Test Brush, 50 to 100 mm (2 to 4 in.) in width.
1.2 This practice is applicable to paint brushes 50 to 100
5.3 Balance, to weigh brush to the nearest 0.1 gram.
mm (2 to 4 in.) in width.
6. Materials
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
6.1 Test Paint.
only.
6.2 Brush-Out Panels, or other typical panels to be used.
1.4 This standard does not purport to address the safety
6.3 Masking Tape, to secure the panel to a flat surface.
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
7. Procedure
health practices and determine the applicability of regulatory
7.1 All tests are to be conducted in an atmosphere having a
limitations prior to use.
temperature of 23 6 2°C (73.5 6 3.5°F) and a relative
humidity of 50 6 5% (see Specification D3924).
2. Referenced Documents
7.2 Record weight of the test brush before loading (W1)
2.1 ASTM Standards:
using the example format as a guide (see Table 1). Place brush
D3924Specification for Environment for Conditioning and
out panel on scale and tare.
Testing Paint, Varnish, Lacquer, and Related Materials
D5301 Practice for Physical Characterization of Paint
7.3 Dip the brush into the specified paint to one-half the
Brushes
length of the filament.
NOTE 1—It is very important to assure that the depth that the brush
3. Summary of Practice
filamentsaredippedintothepaintisconsistentfrombrushouttobrushout.
3.1 Using a paint chosen for the evaluation, the brush to be Toaidindeterminingthedepthtodipthefilaments,atonguedepressoror
other guide for the specified length can be taped to the brush ferrule.
tested is repeatedly loaded with paint and brushed over a
specified area in a specified application time.
7.4 Hold the brush at the specified depth in the paint for
10 s. Remove and hold the brush vertically for 30 s allowing
4. Significance and Use
any excess paint to drain back into the paint can.
4.1 Until the paint brush is fully conditioned and wetted
7.5 Secure the brush-out panel with masking tape to a flat,
with paint, only part of the paint loaded onto the brush can be
smooth, horizontal surface.
transferred to the surface being painted. By properly preparing
7.6 After the drain period, immediately place brush on a
the brush before use, the amount of paint delivered to the
tared brush-out panel and weigh. Record the brush weight
surface can be made more uniform and reflect real use.
loaded with paint (W2). Record the amount of paint picked up
by the brush as A, where A = W2−W1. Apply paint to the
specifiedinitialareaonthebrush-outpanelasindicatedbelow:
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
Brush Width, mm (in.) Initial Area, (cm )
Related Coatings, Materials, and Applications and is the direct responsibility of
50 and 62.5 (2 and 2 ⁄2) 250
Subcommittee D01.61 on Paint Application Tools.
75 and 100 (3 and 4) 500
Current edition approved June 1, 2009. Published June 2009. Originally
approved in 1990. Last previous edition approved in 2004 as D5068–04. DOI:
10.1520/D5068-04R09.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Any smooth type panel can be used. A Leneta 8H-BW Chart, available from
Standards volume information, refer to the standard’s Document Summary page on TheLenetaCo.,15WhitneyRoad,Mahaw,N.J.07430hasbeenusedinroundrobin
the ASTM website. testing for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D5068–02 Designation: D 5068 – 04 (Reapproved 2009)
Standard Practice for
Preparation of Paint Brushes for Evaluation
This standard is issued under the fixed designation D5068; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice describes the preparation of paint brushes for evaluation.
1.2This practice is applicable to paint brushes 2 to 4 in. (50 to 100 mm) in width.
1.3
1.2 This practice is applicable to paint brushes 50 to 100 mm (2 to 4 in.) in width.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 This standard does not purport to address 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. Referenced Documents
2.1 ASTM Standards:
D3924 Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquers,Lacquer, and Related
Materials
D5301 Practice for Physical Characterization of Paint Brushes
3. Summary of Practice
3.1 Using a paint chosen for the evaluation, the brush to be tested is repeatedly loaded with this paint and brushed over a
specified area in a specified application time.
4. Significance and Use
4.1 Until the paint brush is fully conditioned and wetted with paint, only part of the paint loaded onto the brush can be
transferred to the surface being painted. By properly preparing the brush before use, the amount of paint delivered to the surface
can be made more uniform and reflect real use.
5. Apparatus
5.1 Container, to hold paint, for example, a quart can.
5.2 Test Brush, 2 to 4 in. (50 to 100 mm) in width. , 50 to 100 mm (2 to 4 in.) in width.
5.3 Balance, to weigh brush to the nearest 0.1 gram.
6. Materials
6.1 Test Paint.
6.2 Brush-Out Panels, or other typical panels to be used.
6.3 Masking Tape, to secure the panel to a flat surface.
7. Procedure
7.1 All tests are to be conducted in an atmosphere having a temperature of 23 6 2°C (73.5 6 3.5°F) and a relative humidity
of 50 6 5% (see Specification D3924).
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.61 on Paint Application Tools.
Current edition approved Feb. 10, 2002. Published April 2002. Originally published as D5068–90. Last previous edition D5068–92(1997).
Current edition approved June 1, 2009. Published June 2009. Originally approved in 1990. Last previous edition approved in 2004 as D5068–04.
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book ofASTM Standards
, Vol 06.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
Annual Book of ASTM Standards, Vol 06.02.
Any smooth type panel can be used.ALeneta 8H-BWChart, available fromThe Leneta Co., 15Whitney Road, Mahaw, N.J. 07430 has been used in round robin testing
for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 5068 – 04 (2009)
7.2 Recordweightofthetestbrushbeforeloading(W1)usingtheexampleformatasaguide(seeTable1).Placebrushoutpanel
on scale and tare.
7.3Dip the brush into the specified paint to the following depth:
Brush Width, in. (mm) Filament Depth, in. (mm)
1 1
2 and 2 ⁄2 (50 and 62.5) 1 ⁄2 (38)
1 3
3 and 3 ⁄2 (75 and 87.5) 1 ⁄4 (45)
4 (100 ) 2 (50)
7.3 Dip the brush into the specified paint to one-half the length of the filament.
NOTE 1—It is very important to assure that the depth that the brush filaments are dipped into the paint is consistent from brushout to brushout. To aid
in determining the depth to dip the filaments, a tongue depressor or other guide for the specified length can be taped to the brush ferrule.
7.4 Hold the brush at the specified depth in the paint for
10 s. Remove and hold the brush vertically for 30 s allowing any excess paint to drain back into the paint can.
7.5 Secure the brush-out panel wi
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