HIGHTIMES.COM | To Dab Or Not To Dab?
After the extraction, your concentrate must be purged of whatever solvent remains in it. In an open system, this can be tricky – and dangerous.
“I make sure to blast into a pan that’s already floating in fairly hot water, where you put your finger in and have to pull it out after a second,” says de Sailles. “You’ll see the butane bubble away and evaporate, and what’s left over are big, thick bubbles, which you then have to pop. It’ll usually take about two or three water changes until there’s not enough butane left in it to do anything and you can actually take it inside.”
“How fast you get that butane out of your concentrate matters a lot,” he adds. “One of the problems with closed systems is that it takes up to an hour to recover the butane – so that whole time, your extract is soaking in solvent. If you leave extracts soaking too long, it can cause the cell membranes to rupture. So I try to get it out as quick as possible.”
In a closed system, the extractor machine will “vacuum-purge” the solvent from the concentrate. In theory, this method is safer and more reliable, but in reality, that’s not always so.
“A lot of people playing around with vacuum-purging don’t know what they’re getting into,” says Selecta Nikka T. “People are getting vacuums and pumps and chambers that aren’t completely sealing, or they’re not getting strong enough of a vacuum. I’ve even seen some material still crackle after just having water stuck in it from the vacuum chamber.”
“If it makes a crackling sound when you heat it, you know for sure it’s dirty,” de Sailles cautions. “The heat is burning the solvent, so it makes a sizzling sound like water in a hot skillet. If it’s sizzling, then there’s a problem with the technique of the person who’s making it. If they couldn’t keep the water out of it, I wouldn’t trust their extraction skills.”