I think I got this idea on the Forum a year or so ago ... anyway I got some and I think they are great.
It is a 1ml Syringe, does the job and you know exactly how much you are adding with out counting drops, and the fluid goes right to the wick.
1ml = 20 drops of smoke fluid, .5 ml = 10 drops, and so forth.
I added the red marks at 0.5, 0.75, and 1ml ( because my eyes are getting old : )
Mine are from Duda Energy, I think about $1 each ~
Search Ebay :
1 ml Industrial Syringes with 18G x 1-1/2" Blunt Tip Fill Needle