Hi, I do not want to waste big amounts of solvent so im wondering how much do you really need?
I have he 500g bark solution and 600ml of naptha, is 100ml for 5x extractions good enough?

thanks

I assume you mean 5 pulls when you say 5x extractions? Yes 600 ml is plenty especially if you freeze precip and re use your solvent.

When I process a kilo of bark I break it up into 4, 250g into 4 lg jars and use 100ml per jar per pull and re use the solvent till the end then do a full evap on all the solvent combined for jungle spice.

some gets absorbed into the solution so I guess I use about 500-600 ml total to extarct 1 kilo of bark.

nice that it works with the amount. I mean 5 pulls of course, i dont know if I can do freeze but maybe I come up with some method... I have some baking dish but its made out of aluminium...
i have also something made out of stainless steel?

thanks for the help

If you are not able to freeze precip and re use solvent than take time in pulling to ensure saturation. I would let each pull after the first sit for a good while. By the 3rd pull I leave the solvent in the jars for up to a week turning them as many times as possible each day. My 4th and 5th pull for weeks. I get a solid 1.2% yield this way but it takes about 3 weeks to a month.

I would either take your time in this extraction or get more naptha.

Do not use aluminum. SS is ok but glass is better.