I prefer to get a 3ml syringe with luer lock . Pack it with 1ml cotton from camel cig. Unscrw needle, attach micron filter, and attach the needle to the micron. Get another 3ml syringe. Drop said drug of choice (mime is desoxxyn, suboxone, hydromorphome, ect) get a 1ml syringe and backload the 3ml syringe with DOC with 1ml water by pulling out the plunger and squirting the water in(this takes some finnesse) replace the plunger very carefully to not squirt any water out. While the drug is dissolving, I squirt 1ml benzyl alcohol into a 50ml vial then add 30-40ml water into the same vial. Shake the the syringe with DOC, then backload the 3ml syringe with 1ml of the cotton pack and micron filter attached to luer lock. Replace plunger into the cotton pack syringe with doc solution.push needle into vial(that is attached to micron) Push down very slowly as to not rupture the micron. Push down 1ml, then let 1ml back in. Repeat until all the water has passdd through micron into vial.
There yah go, solution pre made that will be good for a month ready for injection. If I dissolve 40mg suboxome in 40ml water, that means 1ml is equal to 1mg . or if I dissolve 120mg hydromorphone into 40ml water, that means each ml has 3mg dilaudid. Get out a clean any gauge syringe, push the needle in the vial, turn upside down, draw back required dose, then take needle out and back load that into a 1ml 30gauge 12.7mm length (i need longs, I have to go ALL the way in to hit a vein, I go in at a very slight angle) , replace plunger ever so slightly and shake vertically once. Then push up to reduce air. Get out an alcohol swab, swab site of intended injection (i usually swab my whole arm LOL) . And then its fun time