Mixing by Weight - Are You ??

[Strangebrew]

LOOK! If you use this program; You need to figure the correct nicotine density in the mix your starting with! IT DOES NOT FIGURE IT FOR YOU!
Enter good ole '1.01' as a nicotine density if your using 1000 mg of nicotine.
I have calculated the said amount of 1.015 going into a 30 ml mix, and compared it to the true density of say a 50/50 mix (at the same nicotine strength, and found a difference of over .7 grams.

I don't really care any longer if I appear hail bent on trying to get any one else to understand!

 

[Strangebrew]

Reason for concern over a small amount of a incorrect density.

Production of 24 mg juice of 100 % VG (density = 1.2364) in making a 30 ml. bottle from 100 mg of nicotine compared to using
100% PG (density = 1.0339) from 100 mg your going to end up with >28.7 mg making the same 30 ml., if your don't recompute the correct density.

These density's were firgured by:
Nicotine density = 1.015
Propylene Glycol density = 1.036
Vegetable Glycerin density = 1.261

 

[xpackaday]

LOOK! If you use this program; You need to figure the correct nicotine density in the mix your starting with! IT DOES NOT FIGURE IT FOR YOU!
Enter good ole '1.01' as a nicotine density if your using 1000 mg of nicotine.
I have calculated the said amount of 1.015 going into a 30 ml mix, and compared it to the true density of say a 50/50 mix (at the same nicotine strength, and found a difference of over .7 grams.

I don't really care any longer if I appear hail bent on trying to get any one else to understand!

It all sounds like a PIA. I will stick wit graduated cylinders, syringes and droppers.

 

[Strangebrew]

No pain... expanding a knowledge of a methods assisting to my vaping. I've spent less on a decent weight scale including an accurate calibration weight than on the lab glassware.
Due to my eyes not being as accurate at fine tuning, digits will be easier to see.

 

[bncceo]

^^ Totally agree. The simplest way to get density/specific gravity is by simply weighing a known amount.

For example, take a 10ml graduated cylinder, place it on the scale and zero (tare) it out. Fill the cylinder with your substance until you reach a volume easy for calculations and the scale reads something tangible. Typically 1ml of the substance works well. Record the weight on the scale. My scale's resolution is 0.01g so as an example lets use PG @ 1ml with a weight of 1.04g.

Density = Mass/Volume = 1.04g/1mL = 1.04 g/mL

Specific Gravity = Density of Substance / Density of Water = (1.04 g/mL)/(1.00 g/mL) = 1.04 (unitless)

If you wanted to be very precise you could measure the density of water in your working environment since density is affected by temperature BUT you would have to use 100% pure distilled water in your experiment. However the quality of lab equipment available to us DIYers would prohibit us from getting any significant difference in density of water other than 1.00 g/mL.

With all of that being said, many flavor manufacturers offer MSDS sheets on their products which list specific gravity, or if the flavor is PG based you can use the specific gravity of PG in your measurements with some confidence. I have decided that for my projects I am only going to worry about calculating specific density for nicotine and spot checking some flavors.

On a side note: Got my scale in last night and did 6 different test batches in the time it would have taken me to do 1 + cleanup. Loving it!

 

[Strangebrew]

............

 

[Strangebrew]

It all sounds like a PIA. I will stick wit graduated cylinders, syringes and droppers.

Very simple to convert the ml from a program like JuiceMeUp. Yet, need to understand the weight of your nicotine how ever you first get it... is effected by the amounts of PG/VG>

 

[Strangebrew]

bncceo, thank you.

 

[Strangebrew]

^^ Totally agree. The simplest way to get density/specific gravity is by simply weighing a known amount.

For example, take a 10ml graduated cylinder, place it on the scale and zero (tare) it out. Fill the cylinder with your substance until you reach a volume easy for calculations and the scale reads something tangible. Typically 1ml of the substance works well. Record the weight on the scale. My scale's resolution is 0.01g so as an example lets use PG @ 1ml with a weight of 1.04g.

Density = Mass/Volume = 1.04g/1mL = 1.04 g/mL

Specific Gravity = Density of Substance / Density of Water = (1.04 g/mL)/(1.00 g/mL) = 1.04 (unitless)

If you wanted to be very precise you could measure the density of water in your working environment since density is affected by temperature BUT you would have to use 100% pure distilled water in your experiment. However the quality of lab equipment available to us DIYers would prohibit us from getting any significant difference in density of water other than 1.00 g/mL.

With all of that being said, many flavor manufacturers offer MSDS sheets on their products which list specific gravity, or if the flavor is PG based you can use the specific gravity of PG in your measurements with some confidence. I have decided that for my projects I am only going to worry about calculating specific density for nicotine and spot checking some flavors.

On a side note: Got my scale in last night and did 6 different test batches in the time it would have taken me to do 1 + cleanup. Loving it!

Yes, thank you! I have researched the MSDS's and already have an Excel program that is accurate. Now, back to the main question I was dealing with... Wonder if the programmer would modify the nicotine density to do the calculations, within the weight program listed in this forum; so it may take less user reasoning?
What ever the coarse anyone takes to make the juice, I wish them the best and a Merry Christmas.
Goooood Byyyyyyeeeeeeeeee............

 

[disco180]

We need a good youtube video of mixing via weight

 

[JulesXsmokr]

We need a good youtube video of mixing via weight

That would be a short and boring video

 

[JulesXsmokr]

Setting up your base weights was only too easy. It is a very logical procedure for most.
On another note.
The glass droppers I use give me 34 drops per ml. of pg, seems a better resolution given than those using droppers yielding 20 drops per ml.
Either way, it is easy to coax a half drop of flavoring out of your dropper to the inside edge of your ejuice bottle.
Those are the ones that you buy for the glass round bottles that scew on.(60&120ml.size)

 

[disco180]

I just made the leap and ordered a scale...what I am not understanding is if the scale measures ml then why would I need to know the density? If the calculator tells me 2 ml and I measure it out to 2 ml were does the density come in at?

 

[turbocad6]

ml is a measure of volume, scales measure weight, not volume. "density" is how the weight compares to the volume. by knowing the density you can then know the volume just by measuring weight

 

[Mobildave]

I keep pointing to my blog entry but probably in vain...
Flavors have a density between 0.9 and 1.04 but are a small part of the final mix and the difference is negligible.
Even if you know the exact density of your flavors, you can't add 1/8 of a drop to your mix to ge the exact amount anyway. And besides that, taste is subjective. You add the amount that you think tastes good. Unless you're going to pass the recipe on to others, who cares what the density is?

Perhaps us new guys weren't smart enough to click on the blog entries under your icon. (yes I just figured out how to do that)
So here is a link http://www.e-cigarette-forum.com/forum/blogs/yo-han/5060-my-way-mixing-scale.html

With that I thank you for the blog and if I had started there I could have skipped reading this whole thread...

Thanks
MobilDave

 

[disco180]

I had to send my scale back because it was a kitchen scale and didn't calculate at least 0.1g but instead it was 1g. Somebody should have stated that you need at least 0.1 or preferably 0.01. Well at least the wife has a new scale for the kitchen

 

[Hiding]

I had to send my scale back because it was a kitchen scale and didn't calculate at least 0.1g but instead it was 1g. Somebody should have stated that you need at least 0.1 or preferably 0.01. Well at least the wife has a new scale for the kitchen

So which was it? Did you have to send it back? Or did the wife get a new kitchen scale?

And it was mentioned. 12th & 13th post in this thread.

 

[JulesXsmokr]

I've bought this balance, and think it will be perfect for this approach. But, I'm having difficulties downloading the weigh calculator. Basically, I can't figure out how to properly download it. Thanks.

best regards, larry mac




My Weigh iBalance 201 (i201)


BTW, I was very pleased with the price, order fulfillment, packaging, and speed of delivery of this product from Old Will Knot Scales. Highly recommend them! The display is somewhat different than depicted however. Mine has a blue display with more segmented numerals. Probably a newer, updated model. It's very nice. The main thing I wanted was the option to disable the "auto off" function, so I can take as long as I want and not have it turn off on me. Not all small, inexpensive balances allows you to do that. Plus, mine came with an AC adapter, a vibration mat, a 200 gram calibration weight, adjustable feet with level bubble, and a windscreen with sliding doors and top.


p.s. also bought these weights:


Amazon.com: American Weigh Scales Calibration Weight Kit WGHTKIT, Class M2: Kitchen & Dining

Very Very nice model ! costs a bit, but in time it will end up saving

 

[JulesXsmokr]

As I continue to use this method, I am still using eye droppers for the small 8ml. bottles of flavorings, like what you buy from Wizard. I have 60 or so of those.
I just bought from them the tiny droppers that will screw on to those bottles, 2 packs of 5 for 2.19 each.
They are tiny and give you a really small drop size, I didn't calculate but its gotta be at least 60 drops per ml. as compared to my 34 drop - 60 ml. size ones. These drop close to .02grams per plonk. That's crazy accuracy for that 3ml. multi flavor mix.
I am starting to acquire more of 10ml. plastic bottles with drip tops flavorings to make this even faster, the drop size is larger, but you can work with it. just more

 

[disco180]

So which was it? Did you have to send it back? Or did the wife get a new kitchen scale?

And it was mentioned. 12th & 13th post in this thread.

I should have said " I have to send my scale back because its a kitchen scale" , I ordered it Thursday night and it was here Friday morning


So now I ordered one from Amazon

Amazon.com - Weigh Masters Precision+ ProDigital Pocket Scale 300g x 0.01g (Silver) - Digital Kitchen Scales

and the this one from E-Bay, I think its the same one Yo Han has and suggested in his blog

300g x 0.01g Mini Jewelry Digital Scale LCD Electronic Balance Scales Weight US | eBay

So she got the scale long story long LOL