In some instances, a single exposure to a strong stress cracking agent may cause premature failure, yet in others it may appear to have no effect after numerous applications. List of polymers tested and identifying features. 6© 2021 Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012 To assess the results of the chemical resistance testing, an ESCR criteria was developed that took into consideration a visual observation as well as the mechanical data. For visual observation, if the sample survived the strain tool and chemical exposure without brittle failure then a positive mark was granted.

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PTFE Wire insulation CONSUMER & AEROSPACE MOLDERS M E T A L L I C - E F F E C T S U L F O N E S O L U T I O N • Metallic appearance • FDA-food contact compliance* • Resistant to repeated washing, steam sterilization, and chemical disinfection cycles • Easy processing to meet flexible design requests • Lightweight to support a reduction in carbon emissions • Created a variety of food contact-approved, brilliant metallic effect colors such as gold, silver, and bronze for optimal aesthetics • Ensured excellent mechanical performance after repeated steam sterilization and harsh chemical cleaning​ cycles • Offered low MOQ with flexible supply options Colorant Chromatics and BASF Ultrason® high-performance polymers in metallic colors KEY REQUIREMENTS WHY AVIENT?

A visual examination of the plastisol is key in determining the proper re-mixing frequency, or if separation has occurred. The visual appearance of a clear surface layer, or the formation of sediment on the bottom of the container, is an indication that separation has occurred and the plastisol needs to be re-mixed.

A visual inspection of the bottles shows that bottle B still has a very recognizable amber tone. The L*, a*, and b* values recorded in the table below are also well in accordance with what can be visualized in Figure 2, where there is a shift in the b* value indicating a decrease in yellow tone. This explains the visual appearance of the plaques having a redder tone.

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