Checking my sums...

[mcboffin]

Hello all

I'm about to embark on some mixing (as soon as the stuff gets here). I'm quite a numerate sort of chap and have done plenty of practical chemistry (at school, university and work) and have no worries on that front. I'm planning a 20ml test run to concoct something for the Mrs and was hoping someone would tell me if I've got my maths right.

I want to use 15% flavouring so that's 15% of 20 ml = 3 ml

I want to make a 6mg/ml liquid from 72 mg/ml PG concentrate. So for 20ml, that would be (20 ml x 6 mg/ml) / (72 mg/ml) = 1.67 ml of nicotine base?

I want to use 70% VG so that would be 70% x (20ml - 3ml) = 11.9 ml VG

I'm not sure if the flavours I've ordered are VG or PG based so I can't factor that in until I know.

Soooo

3 ml of flavour + 1.67 ml of nicotine base + 11.9 ml of VG = 16.57 ml, meaning I need to add 3.43 ml of PG?

As 28% of the nicotine is PG then there is also 28% of 1.67 ml = 0.47 ml PG in there too. So the final ratio is:

VG = 11.9 ml
PG = 3.43 + 0.47 = 3.94
Total PG (Inc Nic base) + VG = 15.84 ml

So:
11.9 / 15.84 = 75% VG
3.43 / 15.84 = 25% PG

And the nicotine is: 1.67 ml x 72 mg /ml = 120 mg diluted in 20 ml = 6.012 mg/ml (6%)

Does this look right or am I waaaayyyy off?

Ta

 

[Huggett]

Looks good to me, and the majority of Flavouring is PG based.

Unless you've searched for VG flavours.

90-95% of concentrates are PG


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[Ment]

Based on 100% PG concentrates and 28% PG in your nicotine, this is what you need:

3ml concentrate
1.67ml nicotine
12.8ml VG
2.5ml PG

But don't be overly concerned about getting the VG/PG spot on, if it comes out at 72 or 68 you'll never know the difference.

 

[mcboffin]

Thanks guys. For ages I'd passed it of as some sort of dark art lol - if I'd have realised that there was very little voodoo involved I'd have been at it ages ago.

All I need to do now is spend ages coming up with a "sort of nutty, caramelly, slightly chocolate / coffee ish but not too sweet" concoction the Mrs will like .... I may be some time!


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[travolski]

Thanks guys. For ages I'd passed it of as some sort of dark art lol - if I'd have realised that there was very little voodoo involved I'd have been at it ages ago.

All I need to do now is spend ages coming up with a "sort of nutty, caramelly, slightly chocolate / coffee ish but not too sweet" concoction the Mrs will like .... I may be some time!


Sent from my iPhone using Planet of the Vapes

Just get the potv calculator pal what i use

 

[scrumpox]

Download the eJuiceMeUp calculator from Breaktru Software developers Shareware Freeware web site
Makes it all very, very simple.

You might try this mix, it would need one or two weeks to fully mature:-

5% Flavourart Espresso Nutzilla
2% Inawera Milk or Dark Chocolate
8% Flavourart Caramel
TPA Sweetener to taste (start with 1 drop per 10ml and increase as required)

 

[mcboffin]

Download the eJuiceMeUp calculator from Breaktru Software developers Shareware Freeware web site
Makes it all very, very simple.

You might try this mix, it would need one or two weeks to fully mature:-

5% Flavourart Espresso Nutzilla
2% Inawera Milk or Dark Chocolate
8% Flavourart Caramel
TPA Sweetener to taste (start with 1 drop per 10ml and increase as required)

I've made 30 ml but substituted the chocolate for bittersweet chocolate and put 2 drops of ethyl maltol in. It's labelled "Scrumpox". Ta.


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