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Tips to increase yield?

S

starman

Rising Star
I've done a couple of extractions so far, but my field seems to be significantly less than what others are getting. Any tips for things I can do to increase yield would be extremely appreciated!

Here's my process:
1. Portioned out 100g of fine-powdered MHRB
2. Cantelmo's method of freezing and heating of the MHRB water to break down the cells (repeated 3x)
3. Separated the liquid into 2 mason jars with around 50g MHRB each
4. Slowly adding lab-grade Sodium Hydroxide pellets (about 20g to each jar) then left to cool to around room temp
5. Added around 200mL VM&P Naptha to each jar, circular motion "shake" until Naptha layer is no longer visible
6. Wait for clear layer separation, then repeated "stirring" step again a couple of times
7. Extract Naptha layer into a measuring cup
8. Pour extracted Naptha into a wide glass Pyrex dish
9. Left to freeze-precipitate for around 36 hours

Here is a photo of the yield I'm getting:
IMG_8195 (1).JPG
 
Last edited:
Transform said:
The likeliest explanation is that you have weak bark - but how many pulls are you doing? From your description it looks as though you only did a single pull. At room temperature you should be doing about 5 or maybe even more. That's 5 separate batches of fresh solvent, or at least re-used solvent that's had the DMT freeze-precipitated out of it.
Click to expand...
The one shown in the photo was the 2nd pull, but the first pull was pretty weak. I hadn't added enough base to raise the pH.

Are we able to talk about suppliers of bark on here?
 
starman said:
Are we able to talk about suppliers of bark on here?
Click to expand...
No we are not.

It could be that room temperature is too cold for your solvent to pull very much, which is possibly an effect of the exact composition of the solvent. You can try any of the following:
  • slightly more naphtha per pull
  • warmer pulls (with a warm water bath - no naked flames!)
  • more pulls
The increase in yield between the first and second pulls could be considered a good sign - maybe a third pull would be better as well, in which case you can carry on pulling until the yield drops off.
 
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