What exactly is meant by color/consistency on a waste tag?
Generators must prove by knowledge or testing that a waste they create is as they have described it. The University agreed with regulators to verify that the contents of a container match the description, thus avoiding extensive and expensive chemical testing costs. This subjective means of analyzing wastes is considered sufficient to prove that the generator does indeed know what has been placed in a waste container. Some suggestions are already given on the waste tags to aid in describing the waste. If you are using bromocresol green, then the color will likely be green. If you are using nonhalogenated solvents, then the solution may be colorless. The consistency ranges from waterlike to viscous/oily.
