NOTE: the mini-droppers have a bigger hole than the aqua mira.
If you use the aqua mira bottles to add drops to a mini-bottle the math doesn't match.
So, if you put 14 drops into a mini-dropper bottle (from the A/M bottles), you get only 10 drops out. (approx)
I will add, and this is just ME, the mix recommended by AQUA MIRA is WAY too strong for most back-country water.
I usually do NOT treat my water (and this is just me) and if I do, I use just a tiny amount. Less than 25% of what is recomenended.
Again, this is just me.