Instead Of Freeze Precipitation, Can I Just Evaporate Away All the Solvent Instead?

TLDR: Yes, and some of our members choose to do this. In tests by ML where no more than 20°C pulls were used, full-evaporation purity flakes showed minimal difference in appearance & texture, and no detectable "in use" difference to the flakes produced by freeze precip/pour-off.

However, be aware that certain contaminants may be present in the solvent, and unlike a total evaporation, a freeze/pour off will greatly reduce the concentration of them. In the light of this it may less preferable to some to do a full evaporation rather than a freeze/pour off

The arguments for freeze precipitation and pour-off are as follows..

1. With evaporation-only, any solvent-dissolved impurities will remain in the end-product flakes rather than being poured off with the solvent after freezing. Basically, it's easier to get a cleaner, less waxy, whiter end-product with the freeze/pour-off and be therefore more likely to be suitable for use without d-juice filtering or clogging. Also, a pour off will greatly reduce exposure to other potential solvent-resident contaminants.

2. Some members prefer to reuse the solvent for future pulls, which becomes impossible with full evaporation

3. Solvent odours are much less prevalent when freezing/pouring off, less fume-extraction may be permissable

Note that freeze/pour off vs full evaporation makes much less difference for end-product purity when cool, quick pulls of dptek are correctly performed than it would with teks that stipulate hotter pulls. In these the solvent will be noticeably yellowed, and complete evaporation will leave an alarming quantity of earwax-like brown/orange goo.

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