Hey friends,
Let me start by stating that this as my very first extraction and a lot of it is experimentation and learning. I have another 100g MHRB that I will be doing a new extraction on tomorrow. I am trying to understand the whole Re-X procedure, how many times to do it, whether to use AC, etc. Here is what I did and the results along the way.
1) I did my extraction of the MHRB using Cybs' Hybrid ATB 'Salt' Tek. I did 4 pulls that yielded the result below, which was 1.589 grams
After that I did a Re-X by dissolving in warm heptane. I used much more heptane than I needed, about 100ml. Once dissolved I poured it into the same dish (cleaned) and put it right back in the freezer for 24 hours. After removing from the freezer, I let it dry in front of a fan for about 1 1/2 hours. I noticed that not all of the heptane was evaporated. There was some places around the edge of the dish that were still wet. Is this normal? With the Naptha it was completely dry after.
Here was the end result after scraping. I assumed I would have a loss, but to my surprise, there was MORE. What gives? Could it have still had some heptane soaked in it, increasing the weight or something?
The color looked pretty nice. It reminds me of coffee ice cream, lol. Anyways, I decided I was going to do another Re-X. I wanted to try it with activated carbon this time. Unfortunately, the Nexus was acting up and I couldn't get online to get the critical info I needed, but I went ahead anyway. I made some mistakes and lost quite a bit.
I heated up some heptane and heated up the crystals in separate beakers. Once the crystals began melting, I slowly added the heated heptane until it was all dissolved. It was about 50 ml. Then I added the AC and left it on the hot plate for a few minutes. I think I put in way too much activated carbon. It was in pellets though and not crushed. I'm not sure if I was supposed to crush it first. Then I ran it through a coffee filter to filter it, which was a bad idea. I read other on here saying not to do that, but it was too late
I didn't presoak the filter or anything and I think a lot got lost in the filter. I also spilled some, which accounted for some loss.
After that, I was down to about 20ml of liquid. I left it in a small 50ml beaker and let it sit for a couple hours. Then info the refrigerator for a couple hours, then the freezer for 20 hours. This was the end result. It is just under 0.5 g. It looks like a more lighter yellow rather than a light brown, as it was previously, but also has this saturated look to it. Could there still be heptane saturated in it?
Ok, so question time. Keep in mind, I am not concerned about the yield amount, but more about the purity. Also, I have not tried any of this yet.
1) At what point do you think I should stop? Should I have stopped after the first Re-X without the AC?
2) I messed up the AC wash, but on the next batch, would you recommend not doing the AC wash at all? If I do it, I am going to buy
this vacuum setup along with some celite . Do you think that is worth doing?
3) Do you think a mini A/B would be better? If so, when would you do that? Would you do that AND the other washes or just that?
4) How do I know if there is in fact any solvent left in the product? What is the best what to dry it? Should I break up the crystals in the last image so it will dry better or leave them?
Thanks so much for the expert advice!
Jibbs