Moe.Red
- Posts
- 5,044
- Reactions
- 14,102
- Joined
- Jul 19, 2020
- Points
- 313
I just had a violent instantaneous boil out during decarb under vacuum. I don't understand.
I am decarbing 50mL of rotovap'ed ethanol based concentrate in a 250mL beaker. My vacuum oven is PID controlled and doesn't stray more than 1* C from setpoint of 125*.
I do this by the clock, but I watch for the bubbles as a general indicator. Hit the oven with a flashlight after 15 minutes, and I see stuff all over the glass, shelf and outside of beaker. WTF? Stand there and stare at it trying to figure what happened, and see tiny bubbles as normal on an ultra low simmer. Suddenly, the whole beaker erupts into a bubble volcano. Then settles back down.
I have continued on by drilling a hole in the lid of a mason jar and I am using that as the decarb vessel in case of explosion. So far it has not repeated.
WTF is going on here? It was like I was dripping water into the beaker or something. Why so energetic a release?
I am decarbing 50mL of rotovap'ed ethanol based concentrate in a 250mL beaker. My vacuum oven is PID controlled and doesn't stray more than 1* C from setpoint of 125*.
I do this by the clock, but I watch for the bubbles as a general indicator. Hit the oven with a flashlight after 15 minutes, and I see stuff all over the glass, shelf and outside of beaker. WTF? Stand there and stare at it trying to figure what happened, and see tiny bubbles as normal on an ultra low simmer. Suddenly, the whole beaker erupts into a bubble volcano. Then settles back down.
I have continued on by drilling a hole in the lid of a mason jar and I am using that as the decarb vessel in case of explosion. So far it has not repeated.
WTF is going on here? It was like I was dripping water into the beaker or something. Why so energetic a release?