Mixing by Weight - Are You ??
- Thread starter JulesXsmokr
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Would it make sense to Determine "Relative Densities" instead?
By that I mean take your Scale and then Measure (as Accurately and Precise) 1ml of each of your Ingredients. Pure VG, Pure PG, Nicotine Base, Flavoring. And then record your findings.
Or you could do the Math for the Theoretical Density.
1ml of Nicotine Base = (% of Nicotine x 1.015) + (% of PG x 1.036) + (% of VG x 1.261)
BTW - As a Check, Your Theoretical Nicotine Base Density should be in between 1.015 and 1.261. Because 1.015 is the Least Dense Component of the Nicotine Base. And 1.261 is the Most Dense Component.
Ideally, yes I'd like to determine relative density. But that will have to wait until at least Tuesday when my scale will be here.
So in the meantime lets see if my numbers for theoretical density are correct.
1ml of 100mg nicotine base = (10% x 1.015) + (90% x 1.036)
If my numbers are right 1mg of 100mg nicotine base = 1.0339g/ml
That all being said, I sucked at math in school.
Trust me, you are Not the Only One. LOL
Once your scale arrives, you could put a bottle on your scale and then Zero it out. Then with a 1ml Syringe, Squirt 1ml of Water into the Bottle.
I think 1ml of Water should weigh 1g.
It's a good way to make sure your scale is Close. And that you are going down the Right Road when Weighing Liquids. Water is Cheap and Easy to Clean Up.
BTW - A Hundred Dollar Bill weighs about 1g also. And I think a Nickel weighs 5g. But double check me on the Nickel.
To double check densities vs the scale I am using, I put a bottle on, zeroed the scale, and measured out 10 ml into it. Took the total and divided by 10. Gives me a good average density that should be a little more accurate than trying to measure 1ml to find density.
I ordered the ibalance 201 that was posted a few pages back from Amazon. Amazon.com: My Weigh Ibalance 201 Table Top Precision Scale - SCM201: Office Products
Should arrive Tuesday or so. By the way guys. I use the Android app called Liquix. You can get it from the play store on any android phone or tablet. Not only is it nicely laid out. It saves all your base ingredients, flavors, and their quantity and cost. It saves your recipes, and when you calculate the recipe, it tells you the cost. The best part though.... With the click of a button, you can switch from volume (ml), to weight, drops, or percent. The program already figures for density as well. And it looks to be accurate from what I have figured. If you tell change your VG from 100% VG to 95% VG (5% water), the weight needed changes accordingly without you having to make any adjustments. If you enter a 50/50 nic base, it adjusts for that. SO SIMPLE!
Should arrive Tuesday or so. By the way guys. I use the Android app called Liquix. You can get it from the play store on any android phone or tablet. Not only is it nicely laid out. It saves all your base ingredients, flavors, and their quantity and cost. It saves your recipes, and when you calculate the recipe, it tells you the cost. The best part though.... With the click of a button, you can switch from volume (ml), to weight, drops, or percent. The program already figures for density as well. And it looks to be accurate from what I have figured. If you tell change your VG from 100% VG to 95% VG (5% water), the weight needed changes accordingly without you having to make any adjustments. If you enter a 50/50 nic base, it adjusts for that. SO SIMPLE!
I also use that app for my DIY juice and it great, I actually stop using the famous e-juice me up calculator. I have over 100 flavors inputted into it and they update it often and fast. This is the best thing since sliced bread, and no I don't work for the company. I use a $20 scale and when i do a 30 ml recipe in a graduated cylinder I get 30 ml. Very accurate
I actually think I found the app because of a post by you, disco. I use my phone or tablet more than my laptop, so e-juice me up wasn't even an option for me. I was using a browser based web calc. This app blows it out of the water using volume. It will be even better when I get my scale and can measure by weight.
Just arrived - looks good! Under $20.00 USD.
300g x 0 01g Digital Precision Jewelry Scale Large Base Counting Function | eBay
300g x 0 01g Digital Precision Jewelry Scale Large Base Counting Function | eBay
I use an app for my android phone called Liquix that does all the conversions for you, you input your flavors (have to add one at a time, which is a pain but ya only have to do it once), nic juice, vg and pg. it defaults to volumetric but you can switch it to weight or back to volume once it does the calc easy. by weight it calculates the weight for each ingredient down .01g. There are a few others but so far this one has been great, no limit to number of flavors etc. it is a paid app but very cheap.
So as an example i can input i want a make a 5ml bottle 5% each of 3 flavors with 12mg nic max vg. calculate itll give me by volume then click weight and it switches the calc to weights for each ingredient.
I haven't verified the accuracy of the calculations the app does for weight but have for volume and its dead on, it seems very accurate over all.
saying this I haven't made the switch to weight yet, but does seem like an easier method. prob going to order a scale this week and see.
So as an example i can input i want a make a 5ml bottle 5% each of 3 flavors with 12mg nic max vg. calculate itll give me by volume then click weight and it switches the calc to weights for each ingredient.
I haven't verified the accuracy of the calculations the app does for weight but have for volume and its dead on, it seems very accurate over all.
saying this I haven't made the switch to weight yet, but does seem like an easier method. prob going to order a scale this week and see.
The way I understand it, a gallon of water with no dissolved solids weighs less than a gallon of water with dissolved solids (like sugar or minerals). It seems to me that different flavors could have different densities, thus different weights per ml. Yes, you could calibrate each ingredients weight per ml first, but that sounds like quite a hassle. Am I missing something?
Just the fact that apps like Liquix does all the calculations for you, and also there is a calculator on here done by Hotrod http://www.e-cigarette-forum.com/forum/diy-e-liquid/480587-new-calculator-try.html
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Most of the relative densities for TFA/TPA flavors are given in the MSDS sheets, and others such as Hangsen, FlavourArt, etc are easily measured and weighed with a graduated cylinder. Using a calculator such as HotRod's, which remembers ingredients, you only have to do this once. A little more work ahead of time is worth the effort, as mixing by weight combines the ease of dispensing by drops with the accuracy of weighing them digitally, and there is no need for syringes or cleanup.
I would rather weigh all my ingredients once and be done with it than mess with syringes every day of the week. It literally takes me 2 minutes to mix a 120ml bottle. Start to finish.
I'd appreciate any recommendations for scales available on Amazon Prime.
Thanks
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Thanks
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As MarkyD said you can find the weights of different ingredients. Of course these are all done in a lab under controlled conditions and at specific temperatures. I have no idea how much deviation there would be when they are weighed at a different temp. I assume not much. I'm looking more for consistency then accuracy in my recipes.
- Dirk
Look at post #71 of this thread. I first found this on Amazon. Got it cheaper on Ebay. Great for $20.00
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