Modify existing pg/vg eliquid ratios

[jkajfes]

I have a bunch of 30ml bottles of a 50/50 ratio nic @ 12MG
I want to alter them back to a 70/30 ratio. I use hotrods calculator because I weight my liquids.
Without getting too complicated can someone who mixes their own give me some insight. Math and ratio have never been a strong point.
How do you do the inputs and what area are you working in the calculator to do this the best way?

I’ve vaped some of the flavours I created so I’d have to reweight the existing amounts which are slightly less than 30ml each bottle... and add to them to recreate a 70/30 ratio. I’m just not sure how to do it…
Would someone be kind enough to help.

 

[dkettle]

Get some 12 mg in 100% pg. Mix 2 parts to 1 is 20 ml 50/50 with 10 ml 100% to get 67/33

 

[Boletus]

You did not mention which is VG or PG in the 70/30, but one way to get pretty close is mix equal parts of the 50/50 and straight VG or PG (whichever is to be the higher). That will get you to 75/25. If you go 3 parts 50/50 to 2 parts 100%, you will get 70/30. But of course unless what you are adding has the same 12 mg/ml nicotine, you will change the nicotine concentration of the product. Also, if you are talking about flavored juice, you will be diluting the flavor, unless what you are adding is the same flavor too.

 

[jkajfes]

You did not mention which is VG or PG in the 70/30, but one way to get pretty close is mix equal parts of the 50/50 and straight VG or PG (whichever is to be the higher). That will get you to 75/25. If you go 3 parts 50/50 to 2 parts 100%, you will get 70/30. But of course unless what you are adding has the same 12 mg/ml nicotine, you will change the nicotine concentration of the product. Also, if you are talking about flavored juice, you will be diluting the flavor, unless what you are adding is the same flavor too.

sorry Boletus you're correct my apology I just assumed that one mentions PG first and then VG as in PG/VG or PG=70 and VG=30. I'm trying to now use HotRod's calculator exclusively but I've never been very good at understanding math or formulas easily. I have to really work at it whereas others find it really easy. I am following or understanding what you are saying about the possibly nic and flavour dilution aspect. I would like to keep it at nic 12MG and add in extra drops of flavour because of the increase of the PG. I beleive the calculator will account for this.

In Recipe Calculator you can open a "modify recipe" window. I have included what I think is correct. Does it make sense. I does to me but I've been wrong before.


sorry about image quality... I use the windows snipping tool to grab the image but they always seem to look fuzzy when published. Does anyone have a better recommendation or is this the nature of the beast?

 

[Boletus]

I have started a blog that explains some of the math, although if you are not good with algebra, if may just be a bunch of gobbledygook. However, if you want to check it out and then ask questions, I'll see if I can help; click on the "1" next to "Blog Entries" under my avatar. I have things to take care of right now, but I will take a look at your calculator output this afternoon.

 

[HotRod19579]

sorry Boletus you're correct my apology I just assumed that one mentions PG first and then VG as in PG/VG or PG=70 and VG=30. I'm trying to now use HotRod's calculator exclusively but I've never been very good at understanding math or formulas easily. I have to really work at it whereas others find it really easy. I am following or understanding what you are saying about the possibly nic and flavour dilution aspect. I would like to keep it at nic 12MG and add in extra drops of flavour because of the increase of the PG. I beleive the calculator will account for this.

In Recipe Calculator you can open a "modify recipe" window. I have included what I think is correct. Does it make sense. I does to me but I've been wrong before.
View attachment 385297

sorry about image quality... I use the windows snipping tool to grab the image but they always seem to look fuzzy when published. Does anyone have a better recommendation or is this the nature of the beast?

Here is how you can validate the numbers produced by the calculator.

Assumptions I am making about your ingredients:

• Your nicotine is 100 mg/ml and is 100% PG.
• Your Black Cherry is 100% PG.

In your original recipe you wanted a total of 30ml of 12 mg/ml at 50/50 PG/VG using 4% Back Cherry. The calculator told you to add the following:

Nicotine 3.6 ml (PG Ingredient)​

PG 10.2 ml (PG Ingredient)​

VG 15.0 ml (VG Ingredient)​

Black Cherry 1.2 ml (PG Ingredient)​

Total PG in your recipe is 3.6 + 10.2 + 1.2 = 15 ml​

Total VG in your recipe is 15 ml​

Validate your nicotine level (3.6 ml * 100 mg) / 30 ml = 12 mg/ml​

Validate your PG Level 15 ml / 30 ml = 50%​

Validate your VG Level 15 ml / 30 ml = 50 %​

You asked the calculator to modify your 30 ml mixture to a 70/30 PG/VG ratio leaving the nicotine level and flavor percentage the same. The calculator told you to add the following additional ingredients.

Nicotine 2.4 ml (PG Ingredient)​

PG 16.8 ml (PG Ingredient)​

VG 0 ml (VG Ingredient)​

Black Cherry .8 ml (PG Ingredient)​

Total PG added 2.4 + 16.8 + .8 = 20 ml​

Validate the resulting nicotine level ((3.6 ml + 2.4 ml) * 100 mg) / (30 ml + 20 ml) = 12 mg/ml​

Validate your PG level (15 ml + 20 ml) / (30 ml + 20 ml) = 70%​

Validate your VG level (15 ml + 0) / (30 ml + 20 ml) = 30%​

 

[Boletus]

sorry Boletus you're correct my apology I just assumed that one mentions PG first and then VG as in PG/VG or PG=70 and VG=30. I'm trying to now use HotRod's calculator exclusively but I've never been very good at understanding math or formulas easily. I have to really work at it whereas others find it really easy. I am following or understanding what you are saying about the possibly nic and flavour dilution aspect. I would like to keep it at nic 12MG and add in extra drops of flavour because of the increase of the PG. I beleive the calculator will account for this.

In Recipe Calculator you can open a "modify recipe" window. I have included what I think is correct. Does it make sense. I does to me but I've been wrong before.
View attachment 385297

sorry about image quality... I use the windows snipping tool to grab the image but they always seem to look fuzzy when published. Does anyone have a better recommendation or is this the nature of the beast?

I cannot read that image, even with my glasses on, but then I have never used the calculator applications anyway, so I am not a good choice to tell you how to use it. There is an online juice combining calculator that might help you verify what you are getting from the other calculator. It allows you to combine up to 6 juices with varying nic, PG, and VG amounts, and it is pretty simple and basic, so not much room for errors. It will not tell you how much of this you need to add to get that, but you could also use it by trial and error.
DIY E-Liquid Combining Calculator
It does not do flavorings though, but if you are using PG based flavorings, you can add that as 100% PG, 0 nicotine if you want to get the precise PG percent.

Regarding screenshots, if you are using a computer with a keyboard, try making the window as big as possible and make sure it is the "active" window. Then press ALT+Print Screen together (sometimes the Print Screen button says something like PRT SCR; it should be to the right of the F12 button). That copies a screenshot of the active window to the Windows clipboard. Then you need to open an image application, like Paint (or PaintBrush in older versions of Windows, and I'm not sure whether Windows 8 has it or not) and paste the image into that. Then you can save it as a file, and it will be at the full resolution shown on your screen.

Regarding order of PG/VG or VG/PG, I think a lot of juice vendors use PG/VG, but there is no official standard, so it is always best to specify for DIY purposes.

 

[jkajfes]

I cannot read that image, even with my glasses on, but then I have never used the calculator applications anyway, so I am not a good choice to tell you how to use it. There is an online juice combining calculator that might help you verify what you are getting from the other calculator. It allows you to combine up to 6 juices with varying nic, PG, and VG amounts, and it is pretty simple and basic, so not much room for errors. It will not tell you how much of this you need to add to get that, but you could also use it by trial and error.
DIY E-Liquid Combining Calculator
It does not do flavorings though, but if you are using PG based flavorings, you can add that as 100% PG, 0 nicotine if you want to get the precise PG percent.

Regarding screenshots, if you are using a computer with a keyboard, try making the window as big as possible and make sure it is the "active" window. Then press ALT+Print Screen together (sometimes the Print Screen button says something like PRT SCR; it should be to the right of the F12 button). That copies a screenshot of the active window to the Windows clipboard. Then you need to open an image application, like Paint (or PaintBrush in older versions of Windows, and I'm not sure whether Windows 8 has it or not) and paste the image into that. Then you can save it as a file, and it will be at the full resolution shown on your screen.

Regarding order of PG/VG or VG/PG, I think a lot of juice vendors use PG/VG, but there is no official standard, so it is always best to specify for DIY purposes.

I know... I wear glasses too and my posted image sucks, too fuzzy. I'll try your recommends on my next post that involves an image attachment. I agree with specifying the PG?VG order makes things clearer.

What you mentioned I've sort of been doing... historically I've used that eJuice Me Up program but they don't include weights as a measure... JuiceCalculator seriously does and HotRod is like the Flash in listening to feedback and making changes to his program. Huge credit to him in this regard.
I just use eJuice Me Up to kinda check proportions until I'm crystal with Juice Calculator...

 

[jkajfes]

Here is how you can validate the numbers produced by the calculator.

Assumptions I am making about your ingredients:

• Your nicotine is 100 mg/ml and is 100% PG.
• Your Black Cherry is 100% PG.

In your original recipe you wanted a total of 30ml of 12 mg/ml at 50/50 PG/VG using 4% Back Cherry. The calculator told you to add the following:

Nicotine 3.6 ml (PG Ingredient)​

PG 10.2 ml (PG Ingredient)​

VG 15.0 ml (VG Ingredient)​

Black Cherry 1.2 ml (PG Ingredient)​

Total PG in your recipe is 3.6 + 10.2 + 1.2 = 15 ml​

Total VG in your recipe is 15 ml​

Validate your nicotine level (3.6 ml * 100 mg) / 30 ml = 12 mg/ml​

Validate your PG Level 15 ml / 30 ml = 50%​

Validate your VG Level 15 ml / 30 ml = 50 %​

You asked the calculator to modify your 30 ml mixture to a 70/30 PG/VG ratio leaving the nicotine level and flavor percentage the same. The calculator told you to add the following additional ingredients.

Nicotine 2.4 ml (PG Ingredient)​

PG 16.8 ml (PG Ingredient)​

VG 0 ml (VG Ingredient)​

Black Cherry .8 ml (PG Ingredient)​

Total PG added 2.4 + 16.8 + .8 = 20 ml​

Validate the resulting nicotine level ((3.6 ml + 2.4 ml) * 100 mg) / (30 ml + 20 ml) = 12 mg/ml​

Validate your PG level (15 ml + 20 ml) / (30 ml + 20 ml) = 70%​

Validate your VG level (15 ml + 0) / (30 ml + 20 ml) = 30%​

wow... HotRod thank you for the detailed reply. I've put it with my ejuice notes for future reference. I have the confidence I need to continue. Thanks for your time at the keyboard. You're assumptions were correct.