What is CRC? | Color Remediation Column


As a patient shopping around at different local dispensaries, one thing I have been hearing a lot about this past year is CRC BHO. If you are a patient, more than likely you know what BHO is. For those who may not know, BHO stands for Butane Hash Oil. It is a potent form of cannabis concentrate that comes in various consistencies, including budder, shatter, wax and more. The name comes from the solvent used to extract the oils from cannabis – butane. An extractor in the form of a vacuum pump or oven, using pressure and/or heat, is used to separate the cannabis wax from the butane.

Now, CRC stands for Color Remediation Column, referring to the filtration method used in the BHO extraction process. Before CRC, extractors would run cannabis material through a closed loop or short path extraction system using only butane as the solvent and nothing else. With CRC, a different combination of absorbents is used to lighten the color. T5 clay, activated alumina and silica gel are compacted tightly in the filtration column for its final filtration, where its able to further extract impurities. This usually tends to make the concentrate a lighter color, making it harder to judge the quality. Some companies seem to do this as a method to improve their product, while others seem to do it to just have a different look, set themselves apart from the competition.

So is CRC safe? Well, from all that I have researched, it seems that most testing