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The bulbs are stacked for convenience so I can remove one at a time as I collect fractions. Generally each bulb will represent a different composition of the compound. This sort of short path device is not a fractioning distillation apparatus. The shorter the path the less fractioning capability...

This photo is after first fraction was taken and disposed of. The odor of first terpene fraction invokes a gag response and it gets flushed. The clean bulb shows condensation. Head thermometer reads 139C. Heating mantle is set for 180C which is the heat under the boiling flask. First condensate...

What can I say lolz?

Here is my set up for simple ultra short path distillation. This is set is basic however it works very well. Be cautious of any online retailer of short path kits. I recently sent one an example of this video - Imhad seen an online complaint about their systems not working and their reponse...

These numbers are meaningless without the pressures used during the measurements of temperatures needed to achieve a phase transition from liquid to gas. The temps you cite for THC is the Pubchem and accurate measurement however they also list this number as accurate at a deep vacuum of 20...

From just the hobby point of view spending a few hours swapping bulbs and making black tar into something light, pleasant and potent is surprisingly fun. With this rig the fractions come out the very best when the temperature is just high enough to accomplish distillation. It is a slow process...

My own observations using both my short path head and the bulb style method is that the short path rig is more involved to set up, there is more holdup to deal with, and the cross contamination is a bigger problem to deal with. With the bulbs as soon as the decision is made to switch to the...

The head thermocouple measures the glass at the neck where it exits the boiling flask. The heating mantle thermocouple measures the heating mantle underneath the boiling flask.

I wanted to directly observe whether pure or nearly pure delta 9 thc burns or not. It had been suggested to me that it simply boils into a vapor and was entrained in the smoke when lighting up with a Bic lighter. I had seen combustion of course with terpene heavy extract. Terpenes are known to...

The boiling point of thc is correctly listed on Pubchem under the trade name of Marinol (and others) as being measure at 200C under deep vacuum of .02 mm Hg. This is said as .02 Torr, or said 20 microns. Deeper vacuum means lower point. In this video I demonstrate a lower vacuum measured at...

First fraction time lapse Second fraction time lapse

This time lapse shot at 2 second intervals (60 fps) shows the second fraction being obtained. The vacuum reads less than one micron - extreme vacuum. The temp shown reveals that the fraction comes over nicely at 155C as read at the thermocouple in the heating mantel. The bulb is part of a stack...

Here is data on a short path run in my hobby short path distillation rig. I started with Nalgene hose from pump to rig but could not pull any sort of hard vacuum. I discovered, after buying $17 per foot Nalgene, that any polymere is not suitable for use as primary vacuum lines for deep vacuum...

The video has a couple typos. Page one says I used methanol but I used isopropyl alcohol as stated in the audio. I often use methanol for the same thing and prefer it over isopropyl alcohol but I was out when I dewaxed.

Here are shots of a Dry Column Vacuum Chromatography (DCVC) run I just finished. The dispensary extract was a few grams of dark brown shatter that tested 60% nominal. The column was packed with silica gel 60 under high vacuum. The solvent gradient used was Hexane/Ethyl Acetate and started with...

I am almost certain this set up is unique lolz. It looks odd but works great as a vacuum flash chromatography rig! This is my rig made up for standard vacuum flash chromatography. It is useful for gram sized analysis and refinement and is not nearly as efficient as DCVC but has its own...

If a butane bubble rises and pops it is purged from the extract. I am pretty long winded but am retired early and do not have much contact with people so I enjoy explanations. With luck my information will someday reach 75% accuracy... Any bubble in the extract that is visible is composed of...