Printing material
Printing material means the purchased substances, usually including gums or thickeners, dyes and appropriate chemicals such as defoamers and resins that are mixed to produce the print pastes applied to textile substrates as patterns and colors.
Source
40 CFR § 63.4371
Scoping language
Terms used in this subpart are defined in the CAA, in 40 CFR 63.2, and in this section as follows: