I always backloaded my heroin and midazolam (used another syringe filled with sterile cottons and cffe filters), then I used a micron filter, though sometimes I didn´t. I usually heated the H for about 10 secs, bt never heated the midazoalam (I had ampules, but mostly used dormicum 15mg pills), for the midazolam I filtered twice and used about 1,7ml of a 2ml syringe to inject 15mg, with heroin t was easier, a ggood ole´terumo .29 1ml 1 1/12¨did the trick...Though I dont reccomend injectin anything, I quit IV used about 3 months ago.....aI Injected so much dormicum pills and bpe daily in my arms and legs (I even shaved my legs to be able to see the veins), now I have no visible visibe veins in any part of my body, except the jugular.....never fucked up there, but my median cubital in my right elbow is so fucked up I think it´ll never heal, so be very careful....I have a shitload of morphine pills now, they aresmall as fuck, and there´s a 24hours pharmacy 1 block from here....but I swore to never IV again (unless it´s an ampoule of a rarity), and I´d love to go an buy syringes ad bang morphine all night long, but that phase is over, be very caredul, and alway dessinfect the area where you´ll shiot before and after, a cotton soaked in ethanol pressedhard against the injection site for a cople of minutes is the best way to avoid an hematroma....it´s fuj as fuck, but be safe.