10 ml, 20 mg/ml (limitations due to the European Tobacco Products Directive) 
What nicotine level do you vape?
Percentage of flavours you add to your mixture
Corresponding volume of flavours
Number
PG ratio
Nicotine strength
Unit price
Bottle size
PG ratio
Volume required
{{f_volpg}} ml PG
{{f_volvg}} ml VG
Num. of bottles
remaining
{{f_restbase}} ml
Price
Volume
PG/VG ratios
Total price
Real cost
Optimise this volume of neutral base
Get this volume
of mixture
Limit the total price to this amount
{{compbasepg}} 100% PG
{{compbasevg}} 100% VG
Bottles of any size, any nicotine strength
What nicotine level do you vape?
Percentage of flavours you add to your mixture
Corresponding volume of flavours
Volume used
Bottle size
Nicotine strength
PG ratio
Price
Bottle size
PG ratio
Volume required
{{volpg2}} ml PG
{{volvg2}} ml VG
Num. of bottles
remaining
{{f_restbase2}} ml
Price
Volume
PG/VG ratios
Total price
Real cost
Get this volume
Calculation of the fundamental parameters of your mixture. The first three fields must be completed. Last three: the one whose radio button is active will be the object of the calculation; the other two must be completed.
Volumes are not used because they would not affect the results. Only percentages of PG are calculated.
NB: a calculated PG may leave the range 0-100%. This means that one of the parameters is incompatible with the others.
This application is based on Mathematica calculations. The deducted formulas, applicable to all components of a mixture, ensure highly reliable results. Below you will find detailed explanations with graphs.
The symbol ¤ represents the "generic currency sign" (sometimes called scarab).
Once your data is entered, each result appears in a box on a blue background. These are the values you must use to create your mixture.
The total price and the real cost of the mixture do not take into account shipping costs or the additional cost due to flavourings, difficult to evaluate. However you can adjust the price of the bottle/neutral base according to these data.
If a backup of the "Larger" tab was made, it will open when the application is loaded.
Note that the relative complexity of the data to be processed and the need to have an overview of them, resulted in an intentionally non-responsive layout, which means that it will not fit into a screen less than 640 pixels wide.
The backup is of type html5 Local Storage. It's not a cookie but is considered as such by browsers, and thus erased when we proceed to their cleaning. It is therefore recommended to protect from erasure the "cookie" created by e-melange.fr. If you use CCleaner, open the Options > Cookies page, select e-melange.fr in the "Cookies on the computer" column, and then click on the right center arrow to move it to the column "Cookies to keep".
Note that each backup overwrites the previous one, but the ones from the "10 ml bottles" and "Larger" tabs are independent of each other.
In what follows, the bottle's nicotine strength is 20 mg/ml.
Blue curve: incidence of your nicotine level (horizontal axis) on the volume of mixture obtained (with 1 bottle, vertical axis). Lower your nicotine level is, higher the volume is.
Gray curve: the volume of mixture is proportional to the bottle's nicotine strength. Here, it was divided by two (10 mg/ml), which reduces the volume obtained by half.
Speed of increase of the mixture's volume according to your nicotine level. Lower this latter is, faster the volume of mixture increases with the number of bottles (horizontally, from 1 to 5). If 5 bottles are required to obtain 1 liter of mixture at 1 mg/ml, 30 will be required to obtain the same volume at 6 mg/ml.
Assuming your nicotine level is 6 mg/ml, you would only need 15 bottles at 40 mg/ml, 10 at 60 mg/ml, etc. This demonstrates the outright incompetence of the European Commission's technocrats, unfortunately decision makers, in the field of e-cigarette. Their decision made vaping very expensive. But that might have been the goal.
It is impossible to mix neutral base and bottles of different PG/VG ratios while preserving the PG/VG of the neutral base. The difference between the PG/VG of the neutral base and that of the mixture is accentuated with the increase in your nicotine level. Thus, at 2 mg/ml a 60/40 neutral base and 20/80 bottles will give a mixture of 56/44, but 36/64 at 12 mg/ml of nicotine. The only solutions are to use 100% PG and VG bottles, or bottles with the same PG/VG as the neutral base.
The quotient your nicotine level / bottle's nicotine strength decides the PG/VG of the mixture. The smallest it is (i.e. the highest the bottle's nicotine strength is), the closest the PG/VG of the mixture is to the one of the neutral base. This is illustrated by the curve below. The nicotine level is 5 mg/ml and no flavour is added. The neutral base contains 80% of PG and the bottle 100%. Higher the nicotine strength of the latter is (from 20 to 250 mg/ml, horizontal axis) more the percentage of PG of the mixture (vertical axis) approaches 80. The explanation comes from the fact that higher the nicotine strength of the bottle is, less its volume is used to reach your nicotine level. This results in a decrease in the influence of the percentage of PG from the nicotine base on the final PG/VG. Therefore, the 10 ml bottles at 20 mg/ml cause the largest difference. You can check this fact in the "Larger" and "Parameters" tabs, by changing the bottle's nicotine strength.
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