I dunno about you guys, when I'm about to go on a cycle, I buy a 100 box of 23g1 5cc syringes, and a box of 100 18g needles. I use the 18's to draw the product and then recap with the 23 and get to work
As far as safety precaustions.. wash hands, set out my tools, prep and load, clean injection site with alcohol, shoot, dispose...