PG/VG Ratio

[Subguy]

This is my first post.

I see a lot of questions on what the PG/VG ratio is for certain juices.

Given that propylene glycol and vegetable glycerin have different specific gravities, it shouldn't be too hard to figure out what an ejuice ratio is that you like.

PG SG = 1.033

VG SG = 1.261

Both at 25C. That's enough difference to accurately measure a blend.

if you use a hydrometer at 25C (77F), write down the measurement of the juice you like.

50/50 should be the average, 1.147

70/30 should be = (0.7 X 1.033) + (0.3 X 1.261) = 1.101

I haven't yet tried this to prove it out, but that equation works for industrial caustic blending where I work.

Ill update this this when I get a chance to try this out.

 

[scheric1]

Haven't tried doing that. The place that I get my ejuices is valorvapor.com and they let you customize the vg/pg levels so you can get exactly what you want. Interesting thought though if your not sure what mixture your particular ejuice is.

 

[Sthur]

Welcome to the forums, that's a good idea. I am a brewer and use my hydrometer all the time for checking alcohol in my batches.

 

[State O' Flux]

Welcome to ECF Subguy and scheric1...

It would be right on... if all you were dealing with was straight PG and/or VG. Unless you have a way to account for the unknown values of flavoring and/or nicotine additives diluting the liquid.

 

[Bunnykiller]

what would be kewl too is finding the viscosities also...

 

[old_geezer]

Given that propylene glycol and vegetable glycerin have different specific gravities, it shouldn't be too hard to figure out what an ejuice ratio is that you like.

I what does "It shouldn't be too hard" mean? I have 2 Hygrometers, and I thought that was geeky enough. What's a hydrometer and are they cheap and easy to use? Is this like weighing yourself in water to find out your percentage of body fat?
- Joe

 

[Subguy]

This is a hydrometer. It measures the difference in fluid density and compares it to water.

I what does "It shouldn't be too hard" mean? I have 2 Hygrometers, and I thought that was geeky enough. What's a hydrometer and are they cheap and easy to use? Is this like weighing yourself in water to find out your percentage of body fat?
- Joe

 

[Subguy]

This is what you use to measure kinematic viscosity. You time the fluid from a "start" line to a "finish" line in a constant temp bath.

I had a job for a little while at Mobil and we used these several times per day. Very accurate for a none electronic instrument.

 

[The VRS]

Generally if it doesn't say the percentages on the bottle i wont touch the stuff and just trust that it is what it says on the bottle

 

[Shopan]

Generally if it doesn't say the percentages on the bottle i wont touch the stuff and just trust that it is what it says on the bottle

As as General Rule I agree, BUT I will say there are Makers that have Proprietary Blends for their Flavors and I respect that. What I will Not touch, are bottles that are not Juice colored i.e Food coloring! I do not want the color to Match a Flavor I just want Juice that taste Good not stuff that is going to gunk up my coil anymore than it has to...

 

[Subguy]

Just trying to spread some knowledge. I use a lot from a manufacturer that won't reveal the blend.

 

[dice57]

Yeah, I used the tried and true method of, vape this, that vape is to harsh, vape that, that vape is to bland, vape this, ahh that vape is just right. Discovered I like high VG juice. I mix at 70-80% VG. Like the nice smooth flavorful satisfying vape high vg delivers.

 

[old_geezer]

Yeah, I used the tried and true method of, vape this, that vape is to harsh, vape that, that vape is to bland, vape this, ahh that vape is just right. Discovered I like high VG juice. I mix at 70-80% VG. Like the nice smooth flavorful satisfying vape high vg delivers.

I keep reading stuff that says VG = Vapor, PG = Taste. I'm a noob though...
- Joe

 

[jasonholmes89]

I prefer more VG than PG. VG is more "vapor" and thicker liquid and "gurrgles" less and PG is more "throat hit" and is a thinner liquid.

But i am just a noob. Less than a year of vaping