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We perform traditional fiber analysis, measuring softwood and hardwood amounts and identifying species. Fibers from paper, paperboard, or pulp are dispersed in water, placed on slides, dried, stained, and counted using a microscope. It is not possible to determine the amount of recycled fiber contained in a paper product.

Microscopic inspection can show the amount of damage that has been done to the fibers. One can then develop an opinion about the possibility of the presence of recycled fiber. The amount and degree of fiber damage, helps in developing the opinion regarding the amount of recycled fiber in the sample. It is not possible to determine post consumer versus post industrial recycled fiber.