I have a method that always works well for me. I use 10ml water for 1g bark, although you could use less. I typically extract 50g at a time so I'm really only using half a liter of liquid.

I use a 5% sodium hydroxide solution. No ratios here, just a flat percentage.

I highly prefer using chloroform or methylene dichloride as an extraction solvent because not only are they more efficient at pulling goodies, they allow you to use completely different techniques. On a level of practicality, naptha would be a better choice for many of you. So let's figure that you filter your bark after an acid boil, I wash (defat step here) my acidic solution with .02% of my volume I'm extracting. Liquid to liquid extractions are the way to go.

The math here is V x .02 where V=volume of acidic liquid. An example is I use 500ml liquid so I would wash with 10ml naptha.

Now, if I were to use naptha I find a formula of V x .05 works pretty good. So multiply your volume of solvent by .05 and that's how many ml naptha I'd use. So for a 50g extraction using 500ml liquid I'd do 500x.05=25. So 25ml naptha per pull.

2000(ml)x.05=100(ml) so for 2L I'd pull using 100ml naptha.

So after I was done with washing (most here call it a defat, but it's called a wash) my solution I'll boil it down to 350ml stirring frequently. Why do I stir frequently? I stir frequently to evenly distribute heat throughout my solution. I will add 150ml basic solution to bring my total volume back to 500. I keep this in mind while adding my lye; so when I add it, I'm adding 5% lye to a 500ml solution, not 150ml..

I'm working on a different approach to naptha extractions/washes that will allow people alot more ease of extracting. It's something I've found to be quite efective extracting other materials where the specific gravity of your solvent is less than the liquid your extracting. (Cuz napths floats on top). I think it'll prove useful for many members here.

IME I use 2 x 2 ltr bottles with 125g -150g per bottle with this TEK
https://www.dmt-nexus.me...aspx?g=posts&t=58064
-
Edit : also combine all pulls then do the mini AB or nps clean up because the fats are that saturated it's gunna be hard to yeild full fledged crystaline yeilds remember this is IMO or IME

Excuse me please,

What jargon? Honestly what right do you have to flame me?

You know what would really help? Maybe a well put together 'method' that can be stickied for people to look at