As far as How Much you will Need or better put Want per X amount I think really depends on many factors, your personal tastes , the flavor in question ( some may need more than others to get the desired impression of that flavor/taste etc. For example Menthol to ME is a much stronger flavor than say vanilla )
I did run into a calculator in the DIY thread here that you might find usefull as a baseline or rough Guide however, and would suggest starting off with the smallest test batch you can (probably 1ml, which would need about 4 drops of flavoring) then adjust it a little if needed/wanted.
Once you find a mix you like, then go ahead an make 10ml or 30 ml or however much you want at that point.
Here is the link to the online calculator I bookmarked (Many thanks to its Creator who is unknown to me) Sorry I cant link directly to it (not enogh posts yet) just remove the space before the .COM below!
todmuller .com/ejuice/ejuice.php
* A quick tip on the page, Once you enter a Number just click the mouse into any other field and it will update the numbers below ( you will see what I mean if that wasnt perfectly clear once you try this
)
I hope this is helpfull / usefull for you, I know that link is awesome for MY inner Mad Scientist!
Edit: From the link above you would need roughly 6ml of flavoring in a 30 ml batch. Then it depends on the strength of your Nic juice and the target level of the end product for the ammount of nic juice and pg/vg you'd use.
FYI the only capellas I ordered was from happy vapor, they come in a 13 ml size. The Lorans I ordered come in 3 ml sizes from where I ordered them from, but the actual loran site sells them in 1 dram, 1 ounce and 4 ounce sizes. For reference 1 oz - 29.5ml, 1 dram is 3.6 ml (which may be the size I am getting actually that is listed by resellers as 3ml)
