[BigJohnny]

A question I probably should've asked back when I started, but also a topic I can't recall ever seeing mentioned....

But how long on average would it take to distill filtered/winterized BHO?

Lastnight I put my first fully winterized batch (1200g) into my distiller and over the course of about an hour I slowly brought the temperature up to 236F where I was starting to get a good reaction in the head but it wasn't boiling over into the condenser.

I get to the point it's looking like it's done with the heads, and the distillate is looking nice and yellow with good clarity so I rotate the cow.

Fast forward 6 hours later from this point and I'm still collecting hearts, up to maybe 250-300g in my collection flask, and still have a load flask full of what must be around 900g....it's 3am at this point and I have no choice but to shut it down and let it cool before I crash and fall asleep.



Is this a normal amount of time, or am I waaaaaayyyyyyyy off base here?

[HashoftheTitans]

Originally Posted by BigJohnny

A question I probably should've asked back when I started, but also a topic I can't recall ever seeing mentioned....

But how long on average would it take to distill filtered/winterized BHO?

Lastnight I put my first fully winterized batch (1200g) into my distiller and over the course of about an hour I slowly brought the temperature up to 236F where I was starting to get a good reaction in the head but it wasn't boiling over into the condenser.

I get to the point it's looking like it's done with the heads, and the distillate is looking nice and yellow with good clarity so I rotate the cow.

Fast forward 6 hours later from this point and I'm still collecting hearts, up to maybe 250-300g in my collection flask, and still have a load flask full of what must be around 900g....it's 3am at this point and I have no choice but to shut it down and let it cool before I crash and fall asleep.



Is this a normal amount of time, or am I waaaaaayyyyyyyy off base here?

That temp is pretty high leading me to believe that you aren't pulling a deep enough vacuum. Terps or solvent in your pump oil is a possibility. Also, make sure you aren't losing vac to your hoses. Grease your joints with krytox gpl207. First pass should come out from 200-225C and second pass at 190-210C. Also make sure any cold trap being used is empty when doing your main body.

[WaterFarmFan]

Originally Posted by HashoftheTitans

Grease your joints with krytox gpl207.

Hello. Curious about sealants. What is the advantage of Krytox over Dow High Vacuum Grease or Dow 111? Thanks.

[HashoftheTitans]

Krytox GPL207 has a higher heat tolerance. Dow high vacuum grease is silicone based and is not rated for temperatures that you will see during cannabis distillation which can contaminate your product.

[WaterFarmFan]

Originally Posted by HashoftheTitans

Krytox GPL207 has a higher heat tolerance. Dow high vacuum grease is silicone based and is not rated for temperatures that you will see during cannabis distillation which can contaminate your product.

Thanks. Is this still the best if you are using a lower temperature range (ie not short path) to cold boil off ethanol? What about grease for very low temperature (<-60C) cold trap pieces?

[BigJohnny]

Originally Posted by WaterFarmFan

Hello. Curious about sealants. What is the advantage of Krytox over Dow High Vacuum Grease or Dow 111? Thanks.

DOW is fucking garbage.

[BigJohnny]

Originally Posted by HashoftheTitans

That temp is pretty high leading me to believe that you aren't pulling a deep enough vacuum. Terps or solvent in your pump oil is a possibility. Also, make sure you aren't losing vac to your hoses. Grease your joints with krytox gpl207. First pass should come out from 200-225C and second pass at 190-210C. Also make sure any cold trap being used is empty when doing your main body.

Are you talking about mantle temperature or head temperature?

I'll have to double check my vac lines, they should be sealed though but it seems ive been having problems in this regard.

I've completely flushed my pump with fresh oil, so I'll haveto double check some other things I think.

[Alister.Frazzle]

Totally depends on equipment, although that does sound slow. I assume you have at least a 2L boiling flask for a 1200g load. I run a 5L LabSociety double-head unit and during my first pass usually distill at 200-250g/hour, once I hit the main body. Usually run a little cooler and slower on 2nd pass, ~100-150g/hr. You can always turn up the heat to speed things up, but at your temperature thc degradation is likely.

[G.O. Joe]

Is it possible that the upper part of your evaporator is acting as a condenser? The Krytox may be high temperature but I could find no vapor pressure data for it because it isn't sold as a vacuum grease. The LVP is their high vacuum grease.

[SkyHighLer]

Originally Posted by Alister.Frazzle

Totally depends on equipment, although that does sound slow. I assume you have at least a 2L boiling flask for a 1200g load. I run a 5L LabSociety double-head unit and during my first pass usually distill at 200-250g/hour, once I hit the main body. Usually run a little cooler and slower on 2nd pass, ~100-150g/hr. You can always turn up the heat to speed things up, but at your temperature thc degradation is likely.

Looking at the picture of that system, I see two head thermocouples, where are they taking the flask temperature to send to the controller? The pictures of their other systems show a thermocouple extending down into the flask which is connected to the controller.

You guys should take note, Lab Society's mantles are up to double the wattage found in many other packages. That's the point I've been trying to get across, use an oversized heater, and dial it down with a power regulator who's output is then controlled to limit temperature.

Doing some further experiments, I found the outside bottom the vessel to track exactly at the boiling point of the contents, but when you really start pilling on the power to the heater the outside bottom of the vessel will track several degrees high, while the inside bottom of the vessel and the contents will remain exactly at the Bp. Get a fast reading thermocouple down into the solution, the insulation just slides off common K thermocouples, strip one, and insert it through a stopper.

https://labsociety.com/lab-equipment...ation-kit-12l/

https://labsociety.com/lab-equipment...lation-kit-5l/


Here's is one of Auberins power regulator/temperature limiters, way less expensive than the J-KEM or Glas-Col devices.

https://www.auberins.com/index.php?m...roducts_id=559


I use a Variac as the power regulator, and temperature limit it with a separate controller that has PID, on/off limit, and cutoff limit functions. The advantage of the Variac is it's ability to over-volt up to 130%, that means it will drive your heater/mantle at up to 130% of it normal wattage rating.