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Chemical Resistance Testing - Heresite Protective Coatings, LLC

ASTM B-117 vs. ISO 20340/ISO 12944-9 – what’s the difference?

ASTM B-117 was the first nationally recognized salt spray standard. Published in 1939, this salt spray test is widespread and often recognized as the “gold standard” in corrosion testing. However, ISO 20340 offers a more realistic and updated method of testing, representing a significant improvement over ASTM B-117. When the

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Fume exposure chemical testing may not be enough for your HVAC-R equipment

HVAC-R coating chemical resistance is often tested using fume exposure. While this method of testing can provide information on the anticipated level of protection for HVAC-R equipment, in certain applications, spot/direct exposure tests may provide better information about your equipment’s longevity in real-world conditions. It is important to conduct spot/direct

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