Okay, I'll break it down for you.
Amount of air to put in the vial should be equal to what you're pulling out.
Get out your dart and have whatever size pin you use to pull out the liquid.
Pull back on the plunger to 1cc with air.
Insert into vial and depress the plunger.
Fill barrel with 1cc of
Test.
Since it is a 3cc dart after removing from the vial pull another 1 cc of air into it.
Still holding the syringe upside down insert pin into the
EQ vial and shoot in the 1cc of air; no
test.
Now pull the plunger back to the 2cc mark and you have 1cc of
EQ and 1cc of
Test in there.
Change to your shooting pin and inject.
Don't forget to be sterile and aspirate.