I work at a facility where we are trying to improve the quality of our ethanol extracts, both our shatter and sugar wax. I have found allot of good info on color remediation and winterization in the forums, but only a little bit in regards to freeze drying before hand. It seems like some people simply store material in freezer, and wash using subzero ethanol while others freeze dry first and then wash using subzero ethanol.
We freeze dry our dried flower first so we can collect the terps for reintroduction later. We wash in freezing ethanol but do not chill flower before wash after it has been freeze dried. Is this something we should be doing?
What are the advantages/disadvantages of freeze drying vs not freeze drying? Will freeze drying have any impact on initial color of washed solution? As in, will freeze drying promote more removal of chlorophyl during soak?