Increase nicotine in purchased ejuice

[Hugh Betcha]

Hi all,

I have purchased some of my favorite ejuice (30ml) but all they had was 3mg strenght.
How do I safely increase the nicotine level to 6mg?
I have 100mg VG based nicotine.

Thanks for your help

 

[Train2]

To have 6 mg/ml in a 30 ml bottle, you need a total of 6x30=180 mgs of nic.
You already have 3x30=90 mgs of nic in the bottle.
So you need to ADD 90 mg of nic.
Since you have some 100 mg/ml nic, if you can add 9/10ths of a ml from that, it would contain 90 mgs.

Make sense? Just squeeze a little less than 1 ml of the nic into your 30 ml bottle, and you should be all set.

 

[Hugh Betcha]

To have 6 mg/ml in a 30 ml bottle, you need a total of 6x30=180 mgs of nic.
You already have 3x30=90 mgs of nic in the bottle.
So you need to ADD 90 mg of nic.
Since you have some 100 mg/ml nic, if you can add 9/10ths of a ml from that, it would contain 90 mgs.

Make sense? Just squeeze a little less than 1 ml of the nic into your 30 ml bottle, and you should be all set.

Thank you very much

 

[bwh79]

To have 6 mg/ml in a 30 ml bottle, you need a total of 6x30=180 mgs of nic.
You already have 3x30=90 mgs of nic in the bottle.
So you need to ADD 90 mg of nic.
Since you have some 100 mg/ml nic, if you can add 9/10ths of a ml from that, it would contain 90 mgs.

That's close, but now you have 180mg's of nic in slightly over 30ml's of liquid. 180/30.9 is actually 5.82mg/ml. If that's good enough for you, then great (you probably won't notice a difference of .18 mg/ml) but if you want to be exact, the equation is:

6(x+30) = 100x + 90

x + 30 is the amount of liquid you have after adding "x-amount" to your existing 30 ml's. Six times that is the total amount of nicotine, if the resulting liquid has a concentration of 6mg per ml (which is what you're after).
100x + 90 is the amount of nicotine after adding "x" ml's of 100mg/ml to the 90mg's that were in your 30ml of 3mg/ml.

6(x+30) = 100x + 90
6x + 180 = 100x + 90
6x + 180 - 90 = 100x + 90 - 90
6x + 90 - 6x = 100x - 6x
90 = 94x
90/94 = x = approximately 0.9574460851...

If you can measure precisely enough, you should add about .95 or .96ml, that'll get you slightly closer than .9 exactly.

Check:
.95ml * 100mg/ml = 95mg
90mg + 95mg = 185mg
30ml + .95ml = 30.95ml
185mg / 30.95ml = 5.9773... or very close to 6mg/ml.

 

[DingerCPA]

+1 ^^^

You will get a minor flavor-dilution. For that small amount, I wouldn't think it to be noticeable.

 

[Hugh Betcha]

That's close, but now you have 180mg's of nic in slightly over 30ml's of liquid. 180/30.9 is actually 5.82mg/ml. If that's good enough for you, then great (you probably won't notice a difference of .18 mg/ml) but if you want to be exact, the equation is:

6(x+30) = 100x + 90

x + 30 is the amount of liquid you have after adding "x-amount" to your existing 30 ml's. Six times that is the total amount of nicotine, if the resulting liquid has a concentration of 6mg per ml (which is what you're after).
100x + 90 is the amount of nicotine after adding "x" ml's of 100mg/ml to the 90mg's that were in your 30ml of 3mg/ml.

6(x+30) = 100x + 90
6x + 180 = 100x + 90
6x + 180 - 90] = 100x + 90 - 90
6x - 6x + 90 = 100x - 6x
90 = 94x
90/94 = x = approximately 0.9574460851...

If you can measure precisely enough, you should add about .95 or .96ml, that'll get you slightly closer than .9 exactly.

Check:
.95ml * 100mg/ml = 95mg
90mg + 95mg = 185mg
30ml + .95ml = 30.95ml
185mg / 30.95ml = 5.9773... or very close to 6mg/ml.

Very well explained and extremely useful.
Thank you

 

[Semiretired]

You need to let it sit a couple of days and shake it once in a while to make sure it blends properly. There are other ways, but that is the simplest...

 

[Hugh Betcha]

Thanks again guys

 

[daviedog]

Buy a one ml syringe too..

 

[Hugh Betcha]

Buy a one ml syringe too..

Would that be more accurate than weighing in grams?

 

[daviedog]

If you have a scale with accurate resolution, no..

 

[AzPlumber]

Would that be more accurate than weighing in grams?

Weight is very accurate as long as you know what the density of your liquid is.