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Specially designed doctor blades can mix the waste
solvent being distilled so that the discharge of the distillation system is a
powder or a flake. Without the doctor blades, the
solvent distillation machine would reduce the waste to a thick syrup or paste. If you distill to a powder or a flake, often the result is
that the discharge can be disposed of as a non-hazardous material. Obviously, if your distillation waste is a thick syrup, you may have to dispose of it as a hazardous
material. Only the dry waste can pass the T.C.L.P. tests required by the Environmental Protection Agency.
 Distillation
equipment that uses the internal scraper blade cannot utilize the Rec-Bag.
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