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Adding Nic to pre-mixed
mikey_westmids Offline
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Post: #1
Adding Nic to pre-mixed
Hi all,

Hope someone can help as my brain appears to be not computing today......

I have 100ml of 3mg eliquid that i want to increase to around 9mg strength. I have a 100ml bottle of 50mg/ml Nicotine in VG....but I can't work out how much I need to add to the 100ml of eliquid to take it from 3mg to 9mg.

Most mixing calcs assume you are starting from a base of 0mg

Thanks in advance Smiling

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04/07/18 09:45 AM
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Richard46 Online
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Post: #2
RE: Adding Nic to pre-mixed
Using steam engine I calculate by assuming your 100ml is zero nic and that you want to make 6ml/mg juice you would need to add around 13.5ml of your 50mg nic vg base. The six added to the 3mg you actually started with would give you about 113ml at 9mg.

I could be wrong.
Flavour will of course be somewhat diluted and the VG % somewhat raised.

04/07/18 10:20 AM
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mikey_westmids (04/07/18)
mikey_westmids Offline
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Post: #3
RE: Adding Nic to pre-mixed
Ok, think I have worked this out but would be grateful for a sanity check.

I've used the following formula:
Vd = ( Vo * ( Sf - So ) ) / ( Sd - Sf )

Vo = Volume Original (ml)
So = Strength Original (mg/ml)
Vd = Volume Delta (how much base you add) (ml)
Sd = Strength of Delta (how strong is the base you're adding) (mg/ml)
Sf = Strength Final (mg/ml)

So, if I am right, I should be adding 14.634ml of the nic base to the 100ml liquid to take it from 3mg to 9mg strength (calculations below)
Vd = (100 * (9-3)) / (50-9)
vd = 600 / 41
vd = 14.634

Does this look correct?

(04/07/18 10:20 AM)Richard46 Wrote:  Using steam engine I calculate by assuming your 100ml is zero nic and that you want to make 6ml/mg juice you would need to add around 13.5ml of your 50mg nic vg base. The six added to the 3mg you actually started with would give you about 113ml at 9mg.

I could be wrong.
Flavour will of course be somewhat diluted and the VG % somewhat raised.

Just seen this as I posted my last message, and our numbers are not so far off (which is good) Jump for Joy

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(This post was last modified: 04/07/18 10:24 AM by mikey_westmids.)
04/07/18 10:22 AM
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MDC Online
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Post: #4
RE: Adding Nic to pre-mixed
Another way of looking at is that you've got the same amount of nic before and after mixing, just distributed differently, so, where X amount of 50mg is added to make 9mg:

100 * 3 + X *50 = (100 + X) *9
300 + 50X = 900 + 9X
41X = 600
X=14.634
04/07/18 10:51 AM
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mikey_westmids (04/07/18)
mikey_westmids Offline
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Post: #5
RE: Adding Nic to pre-mixed
(04/07/18 10:51 AM)MDC Wrote:  Another way of looking at is that you've got the same amount of nic before and after mixing, just distributed differently, so, where X amount of 50mg is added to make 9mg:

100 * 3 + X *50 = (100 + X) *9
300 + 50X = 900 + 9X
41X = 600
X=14.634

Great stuff, thanks!

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04/07/18 10:53 AM
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