What material is used to refill cartridges?

Perhaps the best thing to us is called "poly-fill": it's 100% polyester and is often used to make pillows (not down pillows). You can buy a pillow sized bag of it at any fabric or craft store, or probably even at Wal-mart for a couple dollars. You can pop out the factory filling with either a tweezers or a bent paper clip. Then, just tear off a small piece and push it into the cartridge. Don't pack it too tightly or too loosely though; about the feel of the factory cartridge. 

• One thing to watch out for is that you don't want the "non-bunching" stuff, just regular polyfill. It should feel a lot like cotton whereas the non-bunching stuff feels like fish line.

Once you've got your poly-fill, replacing it within the cartridge is easy:

• Put the polyfill in the cartridge first. Assuming you have a cartridge like a 510 and not like a Blu or Smoking Everywhere, the polyfill should go all the way up to the top of the cartridge, or even a little higher. 

• Second, drip the eLiquid into the cartridge (about 5 drops is all they'll hold).  Please note that with VG eLiquid, which is a little thicker, it may take a little while to soak in, so be patient.
  

After following the simple instructions above, you should be ready to vape in no time! Remember though, not changing the filler between flavors is how one of our taste testers found out that Cherry-Clove-Coffee flavor is actually pretty good! If you don't change your cartridge, or replace the filler between tests you could end up with some interesting flavors of your own!

How Many Cartridges Can You Fill With a 30 mL Bottle?

There are about 20 drops per mL, so a 30 mL bottle translates into about 600 drops, or about 60 cartridges full. That's nearly 60 packs of cigarettes! Not bad for $17.99!

So, for a typical 1-2 pack/day smoker, a 30 mL bottle lasts roughly a month.

To fill a cartridge, most users put in about 10 drops from the eyedropper in our cartridges. The eCig manufacturers say a full cartridge is about equivalent to 1 pack of cigarettes, however our experience is those 10 drops are more like a pack of cigarettes.

Please be sure not to overfill your cartridges. Overfull cartridges can cause problems like getting liquid in the atomizer (causing eLiquid burning instead of vapor production) or eLiquid in your mouth (causing very strong, not so good taste).