Would you consider weighing instead of measuring.

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level0five

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After 1 run of mixing by volume I knew it wasn't for me. Luckily I had a 100g 0.01 gas station scale w/ 90 second shut-off and it's working great for the 10ml test batches I'm doing. I use syringes for VG,PG, and nic and transported my flavors to needle tip dripper bottles. I saw on New Amsterdam's Vapes' vids that VG weighs 1.26g/ml. I am just using 1.03 as an average for flavoring atm. I know you can find the specific gravity of flavors on the MSDS sheets on vendors' sites. Anyone compiled and posted a list yet?
 
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VNeil

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I'm throwing my vote in, a scale is the way to go. I just a got scale and I was able to mix enough juice to last me a month (8 different flavors) in easily half the time it took before. So much more accuracy too. I dig using the scale.
Just curious... Where did you get the calibrated weights to verify the scale accuracy?
 

Girod

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A shiny nickel comes out to 4.95 grams on mine. 6 nickels come out to 29.71 grams. It seems to be precise enough for our use. The specific gravity of the juice ingredients being somewhat inaccurate probably throws it off more than the scale. As long as the numbers aren't jumping over/under, the ratios should still be fine, and mine seem to be always .4-1% under, so precise enough but not exactly accurate. That could be inaccuracy of the scale, or it could be slight wear on the nickels.

In other words, 1.55 grams (1.5 ml) of nic might be as little as 1.485 ml of nic. Or 1.04 (1 ml) mg of flavor might be .99 ml. So a) I can't see that 1% difference in volume with my syringes, and b) I certainly can't taste the difference.
 
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JimDrock

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Just curious... Where did you get the calibrated weights to verify the scale accuracy?

Well I got to say that I can't completely verify the accuracy of the scale, but it was way more accurate than my eyes trying to look at the measuring lines on the mixing beakers. That was such a chore, however with the scale, the easy to read display made measuring simple. :)

Though concerning scale accuracy, I remember seeing calibrated weights, that was on Amazon.com. Hope that helps.
 

mhertz

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Yeah, I also just look up on e.g. wikipedia what a coin weighs of your national currency and then do some testings that way.

Weights are pre-calibrated so unless there's something wrong with the design, then it should often not need calibration for the first long time atleast. Bigger changes in temperature and humidity I belive is the thing that throws off the accuracy from the pre-calibration...

And as others have said correctly, then if the inaccuracy is atleast consistent, then your own recipes at least will be fine
 
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AndriaD

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Just remember that your percentages are still based on volume. For a 30 ml bottle at 80/20 vg/pg, you want 24 ml of VG. But instead of measuring 24ml, you weigh out 29.976 grams. The recipe does not change, use a calculator that has weight, and there is no math involved. Just weigh out what the calculator tells you to.

And yes, you do need to know the specific g/ml of each ingredient. I don't bother with each individual flavor weight (I use 1.036g/ml, which is what I got from TFA for one of my flavors), they are pretty close to/same as pg , but I do get the exact g/ml of my pg, vg and nic.

All this is exactly why I would never consider using weight to mix; if the ingredients were dry, then sure, but liquids? Ummm... I don't buy milk by weight, or water, or vegetable oil... they're liquids, so they use liquid measure. The substances for ejuice are liquid too.

I use syringes; if the quantities are very small, then I use a 1ml syringe, as it has markings for .xx -- hundredths of a ml -- that's pretty exact. If a recipe for a small amount shows quantities as .xxx, thousandths, then I just round to the nearest hundredth.

Andria
 
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mhertz

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I don't use weights because it's more accurate, but because it's just for me easier. I'm alittle ocd about cross-contamination, so I would need different syringes for each ingredient, or else I would have to spend like 10 minuttes inbetween ingredients to clean up the syringe and propperly dry it...

Measuring by syringes is fully accurate enough for me, but I just strive to make it as easy and convenient as possible, hence for me, meassuring by weight is the best...

That the substances is liquid is imho irrelevant; liquids has a weight nonetheless, and of course I see the point that its not really "that natural", but I would rather have the convenience of using a system which could be thought off as an all powerfull dynamic syringe that both never needs to be cleaned and that always has the right volume for the ingredient at hand e.g. from a 1ml syringe to a 100ml in an instant and without cleaning.
 
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