For dripping though, I have a quick and dirty method. Tried it first when I got a bunch of new flavors in that I wanted to try but was broke at the time. I had a standard ego kit (batt, atomizer, atomizer head, and cone. Just took a syringe and dripped a few drops right on the head and inhaled through the cone without the cartridge. Worked well for me and I just vaped an unflavored liquid in between. Would change the head if one was super overpowering. Have had no problems thus far with that method besides it being inconvenient.