I love syringes for small batches. They are quick cheap and accurate. Most diy suppliers and pharmacies sell them. I have 1,3,5,10,30 and even some 60ml. The 18 awg needles work good for all but unthinned VG. I pour my Glycerine into a separate bottle, dilute, then pull with large blunt tip syringe. Wash and flush immediately after every use and final flush x2 w/distilled water. After I am done blending I shake excess water off and make sure they are dry. I don't smell anything or have any residue on them. If they have been used long enough for the marking to start rubbing off I think it's time to retire them and order new ones. Not a big investment and feel free to replace at any time.