1x10 ml (250 mg/ml)? = One 10ml vial of test at 250mg per ml. So a total of 2500mg (or 2.5g) of test per vial. If you were running 500mg of test a week that would only net you about 5 weeks worth of test. You'll need 3 bottles at that dose to run a good cycle (that would put you at 15 weeks which is fine, most cycles are 12-16 weeks).