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I meant that I use 50ml Naphtha per 1g spice to re-x. But if the spice has a high impurity due to super high temp pulls, then 1g yield might only contain 600mg spice and 400mg inactives. Using 50ml naphtha for 600mg spice might be too much naphtha, which leads to a relatively less pure after re-x yield. But I haven't tested this so it might not be a big problem in practice.

Anywayz. I did a new cyb tek extraction and tested the high temp pull method.

Procedure:

Batch #1: 50g MHBR. Acidify @ 20 C. Base @ 20 C. Pull @ 20 C (freeze/thaw during acid)
Batch #2: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 20 C (no freeze)
Batch #3: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 35 C (no freeze)
Batch #4: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 60 C (no freeze)

Results:
[code]Batch #1 freeze: pull 1-3 0mg pull 4 28mg pull 5 30mg total 58mg
Batch #2 cold:   pull 1-3 0mg pull 4 20mg pull 5 34mg total 54mg
Batch #3 warm:   pull 1-3 218mg pull 4 34mg pull 5 54mg total 287mg (0.6%)
Batch #4 hot: pull 1-3 725mg pull 4 0mg   pull 5 0mg   total 725mg (1.5%)[/code]
Observations:

- I gradually decreased the NPS pull volume from 75ml (first pulls) to 50ml (last pulls). This might explain why batch #1 and #2 had no yield in the first 3 pulls. Maybe the specific naphtha brand type was too little saturated to precip DMT at lower concentrations? I will evap the naphtha down to 30% and freeze precip again. Will share results.

- Seems like freeze/thaw during acid stage has the same effect on yield as heating the acid and base stage without freeze/thaw.

- DMT yield was 100% white for batch #1 (freeze). Clean for batch #2 (cold). Dark spots for pulls 1-3 of batch #3 (warm) and oily yellow with dark orange and brown for batch #4 (hot).

- relatively (neglectable) low yield impurities arise from heating during acid and base. The impurities are mostly pull temp related.

- Batch 4 was very oily. I will re-x and share the final weight. Expect it to be around 1%.

Conclusions:

- Seems like blasting 60 C hot pulls gets all the actives out in 3 pulls. I will do 2 additional 60 C pulls on batches 1-3 to get all actives out from these.

- Felt a bit light headed after the extraction. Ventilation and mask did not seem to be sufficient to protect again the hot naphtha fumes. These can escape from jar like large sized screw-on bottle lids. Make sure to have really good ventilation when heating solvents!

<blockquote data-quote="some one" data-source="post: 3841028" data-attributes="member: 18911">I meant that I use 50ml Naphtha per 1g spice to re-x. But if the spice has a high impurity due to super high temp pulls, then 1g yield might only contain 600mg spice and 400mg inactives. Using 50ml naphtha for 600mg spice might be too much naphtha, which leads to a relatively less pure after re-x yield. But I haven&#039;t tested this so it might not be a big problem in practice.Anywayz. I did a new cyb tek extraction and tested the high temp pull method. Procedure:Batch #1: 50g MHBR. Acidify @ 20 C. Base @ 20 C. Pull @ 20 C (freeze/thaw during acid)Batch #2: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 20 C (no freeze)Batch #3: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 35 C (no freeze)Batch #4: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 60 C (no freeze)Results:[code]Batch #1 freeze: pull 1-3 0mg&nbsp; &nbsp; pull 4 28mg&nbsp; pull 5 30mg&nbsp; total 58mgBatch #2 cold:&nbsp;&nbsp; pull 1-3 0mg&nbsp; &nbsp; pull 4 20mg&nbsp; pull 5 34mg&nbsp; total 54mgBatch #3 warm:&nbsp;&nbsp; pull 1-3 218mg&nbsp; pull 4 34mg&nbsp; pull 5 54mg&nbsp; total 287mg (0.6%)Batch #4 hot:&nbsp; &nbsp; pull 1-3 725mg&nbsp; pull 4 0mg&nbsp;&nbsp; pull 5 0mg&nbsp;&nbsp; total 725mg (1.5%)[/code]Observations:- I gradually decreased the NPS pull volume from 75ml (first pulls) to 50ml (last pulls). This might explain why batch #1 and #2 had no yield in the first 3 pulls. Maybe the specific naphtha brand type was too little saturated to precip DMT at lower concentrations? I will evap the naphtha down to 30% and freeze precip again. Will share results.- Seems like freeze/thaw during acid stage has the same effect on yield as heating the acid and base stage without freeze/thaw.- DMT yield was 100% white for batch #1 (freeze). Clean for batch #2 (cold). Dark spots for pulls 1-3 of batch #3 (warm) and oily yellow with dark orange and brown for batch #4 (hot). - relatively (neglectable) low yield impurities arise from heating during acid and base. The impurities are mostly pull temp related. - Batch 4 was very oily. I will re-x and share the final weight. Expect it to be around 1%. Conclusions:- Seems like blasting 60 C hot pulls gets all the actives out in 3 pulls. I will do 2 additional 60 C pulls on batches 1-3 to get all actives out from these. - Felt a bit light headed after the extraction. Ventilation and mask did not seem to be sufficient to protect again the hot naphtha fumes. These can escape from jar like large sized screw-on bottle lids. Make sure to have really good ventilation when heating solvents!</blockquote>

[QUOTE="some one, post: 3841028, member: 18911"] I meant that I use 50ml Naphtha per 1g spice to re-x. But if the spice has a high impurity due to super high temp pulls, then 1g yield might only contain 600mg spice and 400mg inactives. Using 50ml naphtha for 600mg spice might be too much naphtha, which leads to a relatively less pure after re-x yield. But I haven't tested this so it might not be a big problem in practice. Anywayz. I did a new cyb tek extraction and tested the high temp pull method. [b]Procedure:[/b] Batch #1: 50g MHBR. Acidify @ 20 C. Base @ 20 C. Pull @ 20 C (freeze/thaw during acid) Batch #2: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 20 C (no freeze) Batch #3: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 35 C (no freeze) Batch #4: 50g MHBR. Acidify @ 70 C. Base @ 60 C. Pull @ 60 C (no freeze) [b]Results:[/b] [code]Batch #1 freeze: pull 1-3 0mg pull 4 28mg pull 5 30mg total 58mg Batch #2 cold: pull 1-3 0mg pull 4 20mg pull 5 34mg total 54mg Batch #3 warm: pull 1-3 218mg pull 4 34mg pull 5 54mg total 287mg (0.6%) Batch #4 hot: pull 1-3 725mg pull 4 0mg pull 5 0mg total 725mg (1.5%)[/code] [b]Observations:[/b] - I gradually decreased the NPS pull volume from 75ml (first pulls) to 50ml (last pulls). This might explain why batch #1 and #2 had no yield in the first 3 pulls. Maybe the specific naphtha brand type was too little saturated to precip DMT at lower concentrations? I will evap the naphtha down to 30% and freeze precip again. Will share results. - Seems like freeze/thaw during acid stage has the same effect on yield as heating the acid and base stage without freeze/thaw. - DMT yield was 100% white for batch #1 (freeze). Clean for batch #2 (cold). Dark spots for pulls 1-3 of batch #3 (warm) and oily yellow with dark orange and brown for batch #4 (hot). - relatively (neglectable) low yield impurities arise from heating during acid and base. The impurities are mostly pull temp related. - Batch 4 was very oily. I will re-x and share the final weight. Expect it to be around 1%. [b]Conclusions:[/b] - Seems like blasting 60 C hot pulls gets all the actives out in 3 pulls. I will do 2 additional 60 C pulls on batches 1-3 to get all actives out from these. - Felt a bit light headed after the extraction. Ventilation and mask did not seem to be sufficient to protect again the hot naphtha fumes. These can escape from jar like large sized screw-on bottle lids. Make sure to have really good ventilation when heating solvents! [/QUOTE]