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I had no plans to stop smoking but I did after a health scare.
I have no plans to stop vaping but I'm guessing at some point in the future, I will probably reduce the nicotine.
I started at 24mg. Now at 18mg and I'll be mixing at 15mg soon and gradually cut down.

I agree that it's very simple and intuitive. I also really like the fact that you've got the settings button beside nic base and flavours that gives access to changing PG/VG ratios. This leaves the main page uncluttered.

Hi NickIcon I would be happy to help

Thanks fred - between yourself, Perpetua and Roger I've decided that it's too much hassle

I think I'll go with your suggestion and not incorporate Vodka/PGA into the calculator for the moment. That makes my life a lot easier!! 

Thanks all for your input

I understand this Roger.  When looking at EJMU it appears, using your example, that the reduction of 1ml is split 50/50 between added PG% and VG% irrespective of the PG/VG ratio whereas it should be split between total PG and VG ratios.  I'm only really using EJMU to check the figures in my spreadsheet for my sanity  I could just remove Vodka/PGA from the equation as the figures are small and the end mix will be as accurate as needs be but I really want my calculator to be precise.

The way my calculator works is:

I plug in:

ml of final juice
strength of final juice in mg/ml
PG ratio of final juice

nic strength in mg/ml
% of PG in the nic
PG% of final juice

then I select my flavours from dropdown boxes and plug in the percentages of each component.

After doing this, it fills in everything else: volume of component to be added, weight, density, bulk cost, cost per ml.  Then it calculates the totals.

Thanks P,

From what I understand, normally AG (VG thinned with alcohol or distilled water) is not normally taken into account when calculating mixes. Strictly speaking from a calculation point of view, if you wanted figures to be absolutely 100.000% accurate, it ought to be.

The way Vodka/PGA seems to be treated in EJMU as I detailed in my second post seems to be a little odd. It doesn't make much difference if you experiment with an EJMU recipe containing small percentages of Vodka/PGA but if using the calculator and putting less 'real world' examples of much higher percentages of Vodka/TPA, either the calculation method is odd or I am doing something wrong with my own calculations.

If I omit the Vodka/PGA figures, the calculator works well To be honest I haven't used it vodka in my mixes so far but would like the provision for it in the calculator. It's just that I've been using EJMU to verify my calculations by using examples and with the codka/PGA they've not been matching.

I'm in the process of creating my own excel calculator as I can add convenient features.  However, I'm having a bit of a brain freeze.

All was going well until I put in a line for the addition of Vodka/TPA.

The example I'm using is a 100% PG nic base.

If we look at EJMU, adding vodka to a mix changes the VG% content as well as the PG% content.

I don't see how this works as if I want, let's say 10ml of a 30% VG juice, there should be 3ml VG in it.

I don't think it's quite as simple as the VG% being reduced by the % of Vodka.  There seems to be a little more to it.

Could anyone please explain how the addition of Vodka/PGA affects percentages in the formula EJMU uses?