Honestly it looks good to me but ive only done 1 run about 2 months ago. Id say, stop purging now. Test it and see if you like how it tastes and if you like the high. If you taste butane, you can winterize it ( or you can winterize it now anyway). To do so, just melt this oil with the highest proof alcohol you can get (some times little heat helps speed up the melting process). Once all melted, put the solution in the freezer with another container with a coffee filter. After 24-48 hours filter your solution if you see sediments at the bottom or floating. After you filter it, low heat purge (110 max; or room temp purge).
Also keep in mind that the final product consistency and stability (budder vs wax vs shatter) depends on how long you heat and what temp you heat it under and also whether or not you manipulate the product (ie whipping). Another thing toeep in mind that too much heat will rid your product of all those tasty (and medically beneficial ) terpenes
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