30 pounds is all? I can pull that every 3 months with 6 indoor plants flowering and 6 in veg.
Every 3 or 4 months, I'd say that eliminates outdoors.
If finance isn't an issue, gimme a ring. ;) website in my profile.
Has a lot to do with the temperature of the original extraction. Colder columns / solvent will extract significantly reduced undesirable content thus avoiding the need to perform a second step to dewax.
Dabbing on too hot of a nail can also piss off your lungs. I suspect many breakdown...
Winterizing is a second stage dewaxing process where one dissolves their non polar extraction (bho) in a more polar solvent (etoh),freeze to precipitate the undesirable waxes that only serve to inflame your lungs, cold filter (buchner/erlenmeyer/vacuum pump/whatman #1), evap ethanol....
A few of my slabs.
Ocean Beach OG Shatter - tastes like extreme dankness and is very stoney
Kandy Kush shatter, tastes like a lemon cream lolipop. Sativa buzz.
Kandy Kush shatter, winterized. Tastes like lemon drops, lacks the cream flavor of the non winterized.
And last but not least...
I've always grown my own, rarely impressed with anything else.
The dispensaries offer B grade at best, A grade clears off the shelf instantly as they don't know how to produce the sweet nectar, instead choosing to grow stuff that looks, smells and tastes like ass.
Perhaps applicant must pass an IQ test prior to butane purchase.
Seriously, imo let darwin do his thing. The only reason we have so many stupid people is the suppression of natural selection.
The AL125 seems to be the largest single phase unit. Not saying all applications require this size but it is a limitation for most.
http://www.cryomech.com/products/cryorefrigerators/gifford/al125/