Their description is as follows.
EZ Dripper Bottle is a pump bottle for your EZ Dripper. It’s specially designed to provide you the easiest way to refill your atomizer. With a pump or two, your atomizer is ready to use. Now you can have more bottles with different flavors of e-juice to carry with you.
*Does not include Ez Dripper mount kit
*Please do not use DIY or Acidic Juices
As you can see by the images below I have been using some of my own mixes and they are a 70/30 PG/VG. The one I was sent seems to seeps liquid from where the bottom meets the cylinder on the bottom and the follower does not seem to move. While it seems to work ok the leaking is driving me nuts. I am still using it at this time and maybe in search of a nicer setup if anyone is using anything like this.
** EDIT 8/30/2019** Now that I have been using this for a couple of weeks I can say that it likes a 75/25 or higher VG/PG. I did have an issue where the chrome collar came off of the applicator, but I fixed that with some Gorilla glue. You will notice from the attached pictures that the follower is working with these higher VG liquids.