I posted this on a nother forum but I didn't feel like re-typing it so I cut and paste here.
There is a simpler
calculator out there, for basic needs. I have 'em all. And although Dan's spreadsheet is useful, it scares people away with it's complexity. Dan is a math wizzard and fully understands his creation, therefore can't talk you through it without any problem, untilk it comes time for you to actually use it, and you go what was that again?
This
one is a little more refined but less confusing. Also there is Easy Juice Software that someone created on the ECF forum, similar to what this one is, but allows you to keep your own data base of recipes.
I believe in keeping things simple. I have made several recipes and did not need to get fancy. The calc is good if you start off with a high nic content juice and want it reduced/and flavoured to a
specific nic. but that gets complicated and unnecessary IMHO.
I mix at a 75/25 and 80/20 ratio of PG to VG. That is my base (foundation) to build from.
So I take my high nic juice and plug in the mg % of starting nic (PG), the mg of target nic, and the % of VG I want. It gives me a recipe of how much PG and VG I need to add. Flavouring? Enter zero %.
In my case I take 50mg PG and reduce it to 24mg 75/25. That is my base, for all recipes. To make 30mls the recipe would look like this:
14.4ml @50mg PG base juice
8.1ml of PG
7.5ml VG
This renders 30ml @ 24mg. You can round off the 14.4 to 14.5 and reduce the 8.1 VG to 8. Those #s are insignificant really, with the exception of adding just a touch more nicotine than required, which is nothing because you are going to loose some when flavouring.
Now from that base.
In a 3ml bottle fill it to just below the neck and add flavouring 1 drop at a time, and tasting/dripping it on a "clean" atty, until you get the flavour you want. Keep track of the amount of drops. That is your recipe.
Soooooo,
To make 30 mls of recipe X, and you used 4 drops of flavour Y in a 3ml bottle, you simply use your base and add 40 drops of flavour Y, and Woila. You have 30 mls of Y juice at 24mg. Couldn't be any simpler than that.
This method your nic content will remain pretty much on an even keel, regardless of the recipe. I have seen recipes listed like 642 drops of, and 265 drops of. Woa! I am not about to sit there and count drops. I like dealing with whole #s and mix everything in a 10ml syringe.
doing the 3ml step first is that if you screw up like I did, you only wasted 3ml of juice. I created a coffee/chocolate recipe that tasted like mud, not in the beginning but the after taste was absolutely putrid.
BTW most flavouring require 1-2 drops of flavour for 5-6 ml juice, so a little goes a long way.
Hope this helped.