check my math? first time mixer

[PurpleDragon]

OK I am going to attempt my first mix, making 1000 ml of base pg/vg/nic to use for my future recipes. Please help me confirm that my math is right, i have checked with several calculators, read tons, and think im ok but want to be absolutely sure. I want 70%vg/30%pg/3%nic. I plan to mix together: 30ML 100% NIC BASE (VG) + 679ML VG + 291ML PG. does this sound right?

 

[Zipslack]

I get 670 VG + 30 VG-nic and 300 PG, assuming you meant 100mg nic base.

 

[PurpleDragon]

I get 670 VG + 30 VG-nic and 300 PG, assuming you meant 100mg nic base.

Yes and i guess that makes more sense. I'm just a bit confused with 100% nic base vs. 100mg/ml. Are they the same?

 

[SteveS45]

For a first attempt I would NOT Suggest you mix 1,000 ML's.

 

[Zipslack]

It's probably 100mg/ml in 100% VG. The mg value is the concentration of nic. 100mg = 10% concentration (24mg = 2.4%, 6mg = 0.6%, etc).

Oh yeah, definitely do what Steve suggested. Maybe try 100ml batch first. Of course, when you add flavoring, that will reduce the overall nic %, so your final mix would actually be slightly less than 3%.

 

[AJ Steele]

100mg/ml nic base is 10% concentrated (100% would be 1000mg/ml)

 

[Bonskibon]

I get the same numbers as Zipslack.

 

[SteveS45]

With the possibility there is a discrepancy in the strength I would suggest that before you check the Math check the products before you have 1,000 ML's 10 times as strong as you want.

 

[SteveS45]

I would never mix my Nicotine into base before flavorings. Even if you allow for 10% flavoring it will either be higher or lower than the target. Add the nicotine when you are mixing up a batch would be the most accurate. Unless maybe cutting 100 to 50.

 

[retired1]

Moved to DIY e-liquid

 

[Bonskibon]

Everyone has their way of mixing. For myself I'm not overly concerned with my nic. target. I make the base first and add my flavorings by drops. I know it's not the norm to do it that way, but it works for me, but I don't make massive amounts at a time usually 60mls at the most in one bottle.

 

[BrotherBob]

Welcome (again if I missed your first post) and glad you joined. +SteveS45 reply. Suggest you mix nic per recipe for at least a few months before locking your "base" in. You are new, your tastes may likely change.
Might like to read:
dannyv45's blog | E-Cigarette Forum
Hoosier's blog | E-Cigarette Forum
DIY Resources

 

[bwh79]

Yes and i guess that makes more sense. I'm just a bit confused with 100% nic base vs. 100mg/ml. Are they the same?

No, they are absolutely not the same. Nicotine has a density of approximately 1.01 grams or 1010 milligrams per milliliter (mg/ml). We usually just accept the 1% error and call it 1g or 1000mg/ml, so a solution with a concentration of 100mg/ml is approximately 10% nicotine. 100%, on the other hand, would be pure nicotine, something you don't want to be anywhere near without safety gear like a haz-mat suit and a laboratory fume hood.

 

[dannyv45]

I wouldn't mix 1000ml of base right off the bat. Start with 10ml's and vape it plain and see if it meets your requirements first. That's an aweful big waste of supplies if it doesn’t.

Some recommended research:


My blogs will give insight into all aspects of DYI, from steeping to what supplies to have on hand to a basic walk through mixing your first E-juice.

E-Cigarette Forum - dannyv45 - Blogs

Then read hoosier's blogs. These blogs concentrate on fine tuning your mix and give insight on additives.

E-Cigarette Forum - Hoosier - Blogs

Then read Boletus's blog's. These blogs concentrate on formulation of nicotine bases regarding proper calculations methods for figuring Nicotine concentration as well as safety.

E-Cigarette Forum - Boletus - Blogs

Then read Ginger's book "E-Cigarettes 102: DIY E-Liquid". It is a book which I've contributed to that delivers an in depth easy to follow guide in the art of DYI.

E-Cigarettes 102: DIY E-Liquid

I recommend viewing VPLive Vape Team Episode #82: DIY Safety and bookmark it for future reference. It explains safety in all aspects of DYI.

VPLive Vape Team Episode #82: DIY Safety

then read the stickies at the top of the page.

this will explain a lot of the how's and why's.

 

[evan le'garde]

100mg/ml nic base is 10% concentrated (100% would be 1000mg/ml)

Depends on the base of the nicotine liquid.

If the base of the nicotine liquid is Vegetable Glycerine, then 100mg of nicotine per mil = 100mg of nicotine per 1261mg of nicotine liquid.

To have 10% nicotine liquid per mil you'd need 126mg of nicotine in the nicotine liquid base.

1ml of Vegetable Glycerine = 1261mg
10% of 1261 = 126

Every 1261mg's of Vegetable Glycerine based nicotine liquid has 100mg of nicotine in it. So 100mg is not 10% of 1261mg

On the other hand :

1ml of Propylene Glycol = 1000mg (1ml)
100mg of nicotine = 10%.

We all buy nicotine liquid by volume, not by weight. We use nicotine liquid by volume, not by weight. If the nicotine liquid we buy says 10%/100mg's on the bottle it means 100mg's per 1261mg in the case of Vegetable Glycerine. It may sound as though i'm contradicting myself but nicotine liquid is measured in ml/volume, not in weight !. Only the nicotine that is added is measured in weight.

If we are measuring 1ml at a time then we are measuring 1261mg in the case of Vegetable Glycerine.
If we are measuring 1ml at a time then we are measuring 1000mg in the case of Propylene Glycol.

You'd be correct in the case of Propylene Glycol.

 

[evan le'garde]

Those producers of e liquid who print % on their products are confusing the end users. They should be printing mg's per ml.

It's unprofessional to use the % symbol when Vegetable Glycerine is one of the ingredients. And seeing as most new users don't know what ingredients are in what they are buying, and most people think 1000mg = 1ml, then mg's per ml printed on the bottle would be much more accurate. I'd even go as far as to say it should be a regulation.

 

[evan le'garde]

I do realise that nicotine is less dense than Vegetable Glycerine. But it's not that much less when it is only a fraction of the total volume.

 

[evan le'garde]

When i buy Vegetable Glycerine nicotine liquid, i buy it by volume. It says it on the bottle. It also says the mg's of nicotine on the bottle too.

When i buy Propylene Glycol nicotine liquid it says all the same things on the bottle as the Vegetable Glycerine nicotine liquid bottle does.

So who's confused ?.

Does the Propylene Glycol nicotine liquid have more nicotine in it than the Vegetable Glycerine nicotine liquid per ml ?.

Do the producers measure their Vegetable glycerine by weight ?. It doesn't say that on the bottle, it says volume !.

We could assume that the producers measure both Vegetable Glycerine and Propylene Glycol by weight when making the products. Then both the VG and the PG would have the exact same amount of nicotine in them. The problem i have is that it doesn't specify this information on the bottle.

So again, if Vegetable Glycerine is measured by weight when produced, then the information on the bottle should be more accurate, right ?.

100mg's of nicotine per ml of Vegetable Glycerine = 100mg's of nicotine per 1261mg nicotine liquid.

Or is there 126mg's of nicotine per ml ?.

Do we get the same amount of nicotine per ml in Vegetable Glycerine as we do with Propylene Glycol ?.

The bottle of Vegetable Glycerine says volume, not weight !. I have to assume they are saying that there are 100mg's of nicotine per ml because that what it says on the bottle. So according to the information provided on the bottle it means that there is less nicotine in Vegetable Glycerine than there is is Propylene glycol, even though both bottles say the same thing.

 

[evan le'garde]

A litre of Vegetable Glycerine weighs 1261g
A litre of Propylene Glycol weighs 1000g

And they all measure nicotine by weight !.

So 100mg nicotine in Vegetable Glycerine isn't 10%.

 

[AzPlumber]

A litre of Vegetable Glycerine weighs 1261g
A litre of Propylene Glycol weighs 1000g

I'd find a different supplier