How do I know if my black fiberglass tissue is clean and dry?

To check if your black fiberglass tissue is clean and dry, visually inspect it for any visible dirt, dust, or debris. Clean tissue should appear free of any foreign particles. To ensure it's dry, you can gently touch the surface; it should feel dry to the touch without any dampness. Additionally, you can use a moisture meter to check for any residual moisture. If the tissue is used in a construction or repair context, it's also important to ensure that no adhesive residue or chemicals remain on the surface that could affect the quality of your work.