My two partners do larger batches in their private businesses, but I don't and don't see Skunk Pharm Research ever doing so, beyond our R&D project with Cascade TEK, where we will be processing commercial lots of material contracted to Oregon Medical Growers for extraction.
The major portion of my partners businesses is wax or shatter, while the only product that SPR pumps out in volume, is BHO absolutes for oral consumption by cancer or other ostensible end of life patient. We of course do other extractions for ourselves, and in class as demonstrations.
My thoughts on any butane source, is that it should be tested to see what the residuals actually are, vis a vis what they are advertized to be. I'm pretty sure that if Skyhighler hasn't tested it yet, he soon will and we will know for sure.
The Haskel won't be delivered until January, so no results yet. We did get a loaner Caresaver to test, but were dismayed to discover that it isn't an oil less compressor, and relies instead on an oil separator.
We will run a batch of junk material and test it for residual hydrocarbons before exposing any meds to such a system, where the butane with the meds, and the pump oil are in intimate contact.
Whether we use heat or not, and where, depends on what end product we are coveting. For cancer meds, we will be running 210F on the collection pot, but most of the time we won't have any heat on the collection pot.
I infer that we will be concerned about bragging rights at the shootout, so I don't plan to run pot heat, other than an occasional rinse with tap water to deice, but will run 250F on column heat, after the last dump, to speed up recovery time.
I have no plans to do so at the shootoff, but for ultimate bragging rights I would run the butane storage tank in a denatured alcohol and dry ice bath, and no heat on the collection tank. Wax pickup is low and the need to winterize less, so more monoterpenes can be retained at purge.