Glass bottles (empty)
----------------
1    liter       - 1 ltr
3   500 ml    - 1.5 ltr
13 250 ml    - 3.25 ltr

+ 1 500 ml bottle already filled with 48 mg/ml nic

I have 5 liters of nic to bottle.

Put the 100 mg/ml into 250 ml bottles (8).
Put the 60 mg/ml into 250 ml bottles (4).
Put the 48 mg/ml into the 1 ltr bottle (1).
Put the 36 mg/ml into 500 ml bottles (2).

Leaving :
1 250 ml bottle
1 500 ml bottle

Take to Greg's:
all 100 and 60 mg/ml (case of 250 ml bottles)
all 48 mg/ml (1 ltr and 1 500 ml)
1 500 ml of 36 mg/ml

Keeping 1 500 ml bottle of 36 mg/ml here