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Dyne level testing can be subjective. It is not uncommon for individual interpretations to vary beyond the typical accuracy range of +/- 2 dyne. To minimize interpretation error, Dyne level testing should be performed in accordance the testing methods described by the American Society of Testing and Materials (ASTM D2578-04a). Dyne solution is a mixture of Ethyl Cellosolve and Formamide. The percent concentration of the two chemicals determines the wetting tension, or energy of the solution. The solution usually will contain a dye to allow better visibility when applied to the substrate. Dyne solution is considered a hazardous material, requiring appropriate handling and disposal requirements. The Material Safety Data Sheets are available upon request and are shipped with each order.