Hey Doobs, what have you got going on here exactly?
Powdered bark in water that has been brought down to a ph of 4, boiled, strained, bark discarded and now you are doing naptha pulls on the acidic solution to defat before you basify it? Am I following this correctly?
yeah, that's the jist of it.
i defatted my first few extractions but, i really didn't like the idea of using all of that extra solvent that is just going to be discarded.
i found you can get just as clean a product using activated carbon before your initial freeze precip. plus, this method is much easier than a standard defat.