ASTM D8008-15
Standard Practice for Representative Field Sampling of Traffic Paints

Standard No.

ASTM D8008-15

Release Date

2015

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D8008-20

Latest

ASTM D8008-20

Scope

5.1 For quality assessment and/or approval for use of traffic paint stored in the field, it is often necessary to obtain a representative sample for testing. Correct sampling of traffic paint is a skilled operation, and if not properly conducted with the right equipment and procedures, a sample may inadvertently fail one or more specification tests when evaluated by a testing laboratory. Among the test results that could be affected are solids content, resin content, TiO₂ content, heat-age stability, freeze-thaw stability, and dry time. Any of these could inadvertently result in non-approval or penalties.

1.1 This practice covers procedures for obtaining representative field samples of mixed or unmixed waterborne, solventborne, or other liquid traffic paints from drums, totes, or machine striping tanks. Traffic paint samples are often taken from storage containers in the field by paint suppliers or government agencies for laboratory testing to determine product quality and/or for approvals prior to striping. It is important that the samples taken are “representative” (have a composition reflecting the overall composition in the container). Although traffic paints can remain homogeneous for weeks or months, some will stratify over time and become non-homogeneous. Obtaining a representative sample can be challenging particularly in a field environment. The desired method for obtaining a liquid sample is to thoroughly mix the sample until homogeneous and then sample the mixture from the top. If complete mixing can’t be verified then an alternative practice is to obtain a sample using a liquid tube sampling device. These devices have the ability to capture a top-to-bottom core of paint from the container. Inner or outer rod tube samplers are recommended for sample extraction. The inner rod tube sampler is the preferred sampler.

1.2 The practice selected for representative sampling should have written agreement between the parties providing the product and those testing the product.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 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.

ASTM D8008-15 Referenced Document

• ASTM D1475 Standard Test Method For Density of Liquid Coatings, Inks, and Related Products
• ASTM D3925 Standard Practice for Sampling Liquid Paints and Related Pigmented Coatings
• ASTM D5495 Standard Practice for Sampling With a Composite Liquid Waste Sampler (COLIWASA)
• ASTM D562 Standard Test Method for Consistency of Paints Measuring Krebs Unit (KU) Visosity Using a Stormer-Type Viscometer
• ISO 1513 Paints and varnishes - Examination and preparation of test samples
• ISO 15528 Paints, varnishes and raw materials for paints and varnishes — Sampling

ASTM D8008-15 history

• 2020 ASTM D8008-20 Standard Practice for Representative Field Sampling of Traffic Paints
• 2015 ASTM D8008-15 Standard Practice for Representative Field Sampling of Traffic Paints