Is there a way to use the calculator with premixed base? For instance, I'll mix several hundred ml of 50/50 or 70/30 to partition into test batches. If I add 5% of flavor, I know I need to add 5% of VG to balance back out the ratio. Easy enough if I measure out using syringes but I prefer using weight when possible.
This could be further extended by making large batches of a particular flavor of juice, then helping divide it up to add varying levels of nicotine to each bottle.
Essentially there would be a target amount (say, 30ml) and target ratio (say 50/50), and an option to have premixed bases (flavored or otherwise).
I thought about jerry-rigging it with the "other" ingredient category but it grays out the PG/VG option.
Seal,
Make a new nicotine ingredient. You can set the mg/ml level of your premix and the PG/VG ratio of the premix. You can have as many nicotine bases as you want.
Then in the recipe, select your new premixed base as your nicotine entry. It will then calculate the final PG and VG amounts based on the ratio in the premix.