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ASTM D661: A new test offered at Micom Laboratories

Micom Laboratories now offers the ASTM D611 standard as part of its paint testing and coating testing services . This method provides a visual aid which serves as a reference for the characterization of the magnitude of the failure evinced on paint films. More particularly, this test protocol provides information which enables the adequate identification of the type of cracking present on the specimen. However, the latter does not detail a methodology which conditions the sample before its evaluation. Thus, it is essential to pair this practice with another standard in order to assess this attribute. For instance, this method may be associated with an accelerated aging test as a means to evaluate this property.

ASTM D661 test

The goal of ASTM D661 is to provide a tool that will aid in the visual inspection of the cracking of exterior paints present on the specimen. More specifically, this standard provides illustrations of a line type cracking as a means to enlighten its characteristics in order to distinguish with ease the other class of cracking. In other words, those photographs depict a specific type of failure and due to the fact that they do not portray the whole range of possibilities, it is necessary to interpret those images in order to deduce accurately the type of failure present on the specimen. On another vein, it is important to mention that the scope of this test is to evaluate the magnitude of the cracking of exterior paints and the latter does not furnish a methodology which allows to condition the sample before its assessment. Hence, it is essential to associate this test protocol with another standard as a means to evaluate the characteristics of the paint film.

Micom offers polymer testing services for a wide selection of material and products. For more information about the ASTM D661 test, we invite you to contact our material testing laboratory today. It will be our pleasure to answer your questions about either of those tests.

Micom Laboratories is a third party industrial material testing laboratory accredited by the Standards Council of Canada, CGSB, ISTA and many other organizations.


All of the information and opinions contained in this blog are made with the information, and the understanding that we have reviewed at the time of publishing. However, despite our efforts, we do not offer any guarantee of their accuracy, thoroughness of our investigation or validity. The author of this blog is not liable for any inaccuracies or any losses or damages that may result from the use of the information or data contained herein. This blog has not been reviewed or verified for its accuracy by any peer group associates prior to publication.

Michel Comtois

Michel Comtois

Michel Comtois is an accomplished founder and CEO of Micom Laboratories Inc., an ISO/IEC 17025 (2017) A2LA-accredited independent laboratory specializing in product and material testing services. Before establishing Micom Laboratories in 1999, Michel, who also holds a Master’s degree in Physical Chemistry, gained extensive experience over a 14-year tenure managing departments spanning physical chemistry, physics, mechanical and material testing in research and contract laboratories. This exposure granted him a profound understanding of the intricacies of development and material testing processes.

In addition to his practical experience, Michel has played influential roles on various voluntary technical committees. He notably, served as the chairperson for CAN/CGSB 44.227 and the Head of the Canadian Delegation for ISO TC 136. He also contributed to the following technical committees: CAN/CGSB 44.229, CAN/CGSB 44.232, ANSI/BIFMA X5.1, ANSI/BIFMA X5.5, ANSI/BIFMA X5.6, ANSI/BIFMA X 5.9 ANSI/BIFMA X5.11, ISTA Certification Council.

Leveraging his unique expertise, he has led Micom Laboratories to become a renowned name in its niche, now operating out of a 16,000-square-foot test facility in Montreal, Canada, and serving a diverse customer base with an array of material and product testing services. Follow Michel on LinkedIn

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