TooBigtoFail
GLP-1 Apprentice
Sorry, was not about the paper calculation, but how do you draw exactly 6.25u on a syringe?Hope this helps!
Just to clarify, are saying .0625 ml / 0.0625cc?
I use similar (thinner) Easy Touch 31G 1cc(1ml) 5/8", and would be hard press to see the difference between 6 or 7u unless I use a magnifying glass. And if I am off, would mean a 15% difference in dosage. One suggestion if you want to stay within that dosage range is to use 0.3cc syringes.
Yes, some stoppers feel harder if you are not 100% in the center. When you have a moment, take a stopper out and study it. Or rotate the vial, and see the open slot in the stopper! You got to hit within that gap. They vary in design.
As FlowerFairy said, if you use it thru 2-3 stoppers before pinning, you will feel the 'dullness' which can cause a small isr. Pulling more bac into the syringe, to dilute more, can further dull the bevel. I do not pin in the belly, where the 'baby' skin is. I use the love handles, where the skin is more leather like and thicker fat.
Adding 3ml of bac to the 2ml vial, will make it harder to draw the first dose out because the air gap is very small. Creates a vacuum. Need to pull air in the syringe, inject it in the vial, before you draw, to create small pressure.