Here’s weird, when i’m not logged in, the post is #679; when i’m logged in it’s #680.

+1 on Leisurely -> Lazy, lol.

You also worked the pulls more for the boiling treatment; it’s already quite a workout getting a good 1-min stir on quantities > than ~50g of material.

Yes, if someone demonstrates a problem with the reused solvent from the std tek, i will certainly consider darkness of solvent a relevant consideration beyond exclusively crystal quality and quantity.

Yes that is a good check, I would do it every time a new source of material is used, then compare yields of future runs (of same material) to save solvent and work.  Additionally, before neutralizing solvent, a filtering should be done to capture crystals that developed after initial filtering.