is there any specific reason for q21 to be a stirring tek as opposed to a shaking tek?
does shaking cause emulsions?
if so is there a method of demulsifying?

The q21q21 TEK is what many people would call a dry TEK. A wet TEK has the MHRB suspended in a large quantity of water. Like 250grams of MHRB mixed with 1.5l of water. The q21 TEK on the other hand uses minimal amounts of liquid and by the time you'll be adding your solvent you have a reasonably dry mixture. If you have to shake that you're pretty much just slamming a lump of MHRB around. Your solvent won't get in touch with most of the mixture and hardly absorb any DMT.

By stirring you expose most of the solvent to your mixture and all is well.

Well it can be a shaking tek, actually works very well as said in this recent thread

I'll edit that little bit out now.

Shaking does work it is confirmed.

swim loves the q21 tek.. says you can control how the solvent gets into every nook and cranny.. like an almost perfect wash...it just seems to go so well every single time....much respect

SWIM's going to give this a go over the next few weeks and was just checking.. in the q21 tek 2 do you fully stir the NAPTHA through the mixture on the first pull and then let it seperate before pouring off. This seems to be the only bit that SWIM doesn't understand.

Cheers guys