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Old 06-28-2011, 10:17 PM   #1
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Rocket's E-Juice Mixing Tutorial

PREFACE (the beginning of many words to come)

Electronic cigarettes using a liquid ‘vaping’ medium (e-juice) containing Nicotine, Propylene Glycol, Glycerin, and various flavors are helping many break the cigarette habit. While there are several sources for commercial e-juice in hundreds of flavors it is also possible to prepare custom DIY e-juice, sometimes at a substantial savings in cost.

The goal of this tutorial is to show that mixing and vaping your own e-juice is easy and can save you bundles of money, make you smarter, and help you look younger for years. The combination of ingredients I'll use will minimize the risk of potentially dangerous impure or even counterfeit ingredients making their way into your body. I'll outline the simple math steps to determine how much of the raw materials you need and how to mix them to your desired Nicotine strength. Following these methods you should be able to mix a medium strength juice with basic flavors for about 10 cents a ml. Less if you are a proficient shopper.

A few prerequisites I ask the reader to complete before starting DIY mixing will be getting a clear picture of how much 'store bought' juice will cost you over the next year of vaping and how much you might be able to save by mixing your own. I'm going to ask you to practice some of the mixology math before you actually start mixing. While the hardest part of DIY mixing might be shopping for the raw ingredients and juggling the cost of the materials and shipping charges, the most important part is learning about SAFETY when handling Nicotine solutions. Make sure you know what you are doing before doing any real mixing.

Don't try and blend exotic flavors or add extra ingredients to improve Throat Hit or increase sweetness or for any of the various reasons strange chemicals are added to e-juice. The more ingredients you add the higher the risk for making a batch you won't be able to stomach (yuk factor) or making a batch that will go bad before you can use it up. Leave your bulk e-juice stash as simple and uncomplicated as possible. I suggest keeping a reasonable quantity of maybe a 2 or 3 month supply (in 2 or 3 different flavors) for general everyday vaping.

I've been using these techniques for over 2 years to mix consistent tasting juice for a vaping family of 2. My likes and dislikes, methods, and assumptions will probably differ from those of the many experts you will run into. If you do not agree with anything contained in this tutorial I suggest you learn exactly why you don't agree and go forth benefiting from that knowledge.

Although I believe that the information presented is correct and accurate and falls within the purview of generally accepted practices for the use of electronic cigarettes currently in the public domain, I offer no warranty or guarantee that the ingredients and methods presented, or that the vaporization and inhalation of liquid solutions containing Nicotine are indeed safe and will not harm you. The reader is further cautioned that use of this information is completely at your own risk.

The author, known as Rocketman on the VapeAtron.com online forum, requests that dissemination of this tutorial via a website operating as a for-profit, commercial entity include a reference or link to this original website and thread. Corrections/updates to the text will only be maintained in this web space.




This tutorial is organized as follows:

Preface----- You are Here
Chapter 1 Nicotine Safety in the Home
Chapter 2 Units of Measurement, Calculations and Examples
Chapter 3 Ingredients-Time to Shop
Chapter 4 Setting up a Temporary Home Mixing Lab
Chapter 5 Preliminary Mixes
Chapter 6 Final Adjustments and Testing
Chapter 7 Labeling, Storing and Dispensing
Summary----- Don't Go Jumping to the End and Spoil the Surprise
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 06-29-2011 at 11:36 PM.. Reason: Disclaimer
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Old 06-28-2011, 10:17 PM   #2
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Chapter 1 Nicotine Safety for the DIY Mixologist

Every vaper should read up on the hazards of handling Nicotine solutions before actually playing around with DIY juice mixing. Got that? Go search the internet. The concentrations I am going to discuss in this tutorial while not as hazardous as pure undiluted Nicotine can still be dangerous if mishandled. Whereas a couple of drops of pure undiluted Nicotine, or even the fumes from a small spill can be deadly, diluted concentrations are not nearly as risky. A drop or two of what we will be working with or fumes from an open bottle (at room temperature) probably won’t cause any ill effects. The risk goes up at elevated temperature, so don’t heat Nicotine solutions and large exposed surface areas, like a spill, release larger amounts of Nicotine into the air. Have cleanup materials handy. Clean up spills immediately and get the cleanup materials outside. Quickly rinse NIC juice off your skin, another good reason to set up shop in the kitchen. Work with adequate ventilation and away from heat or flames. Don’t forget that some gas ranges still use burning pilot lights. Don’t mix Nicotine lab work with watching television. Get away from any distractions and let others know not to bother you until you are done. Just like reloading ammo.

I want to caution anyone that is contemplating mixing up several months’ supply of e-juice to consider the risk should this ‘stash’ fall into the wrong hands. If a bottle of your stash makes its way to your child’s elementary school, and don’t think this can’t happen because 5th graders takes guns to school, you would be ‘in a heap a trouble’. Children (up to the age of about 25) are not capable of comprehending the risks involved. They will listen to the advice of one of their Facebook friends and try anything before believing anything you tell them. I wouldn’t put it past a teen trying a 5 hour energy drink laced with Nicotine and having no earthly idea why his heart stopped. And now days it’s not just boys but hip-hopping, ball-capping, pick-up driving girls that think they are just as invincible as the boys. If they hear it on the internet they will try it.

Pets seem to be attracted to some of the ingredients in e-juice. They will play with a plastic bottle and chew on it until they puncture it then lap up the spillage. Keep all Nicotine juice under your tight control.

If you are careful and follow the instructions in this tutorial anyone should be able to economically and safely mix your own e-juice. Make sure you understand every step of the process before you begin mixing. I recommend that you consider unflavored concentrations of 48 to 60mg/ml and stay away from 100mg/ml until you have prepared a few batches. Please don’t even think about using pure Nicotine.

NOTE: Although the FDA considers Propylene Glycol to be 'generally safe' and it is used to make some dry dog foods soft and moist it is not considered safe for cats. Do not allow cats to consume any products that may contain PG.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 06-30-2011 at 03:33 PM..
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Old 06-28-2011, 10:17 PM   #3
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Chapter 2 Units of Measurement, Calculations and Examples

Forget the mega-milli-litergram; we will be using the milligram (mg), the unit of measurement for mass, the milliliter (ml), the unit for liquid volume, and the derived unit milligrams per milliliter (mg/ml), which is the generally accepted measurement unit for the amount of Nicotine in e-juice. This defines the concentration of Nicotine as the number of milligrams of Nicotine in each milliliter of solution.

For example, 18mg/ml e-juice has 18 milligrams of Nicotine in each milliliter of the juice. It follows that a 30 milliliter bottle would have 18 X 30, or 540 milligrams of Nicotine in the whole bottle, and a 500ml bottle of 60mg/ml would have 60mg in each milliliter (too strong to vape) but the whole bottle has 30,000 milligrams of Nicotine in it. Now that’s a whole lot of Nicotine Paw Paw.

Calculating the total quantity of Nicotine in our mixes is important. We will be adding Nicotine containing juice and keeping track of the total number of milligrams of Nicotine we added. By dividing this quantity by the final volume (ml) of our mix we then know the strength, or concentration of the mix. I’ll toss out some examples but practice this until it makes absolute sense. This is important stuff.

Example 1:
I just bought a 120ml bottle of 48mg/ml unflavored. How much 20mg/ml juice will that make?
That 120 ml bottle has 5760mg of Nicotine in it (120 X 48). If I divide the total nicotine by the desired concentration 5760mg divided by 20mg/ml I could make 288ml of diluted e-juice.
After adding diluents like Propylene Glycol (PG), Vegetable Glycerin (VG), Flavorings (YUM), and thinning agents like water or grain alcohol (hick ) the Total Final Volume needs to end up close to 288ml. The best way to do this is to record everything put in the mix as we go.

Example 2:
How about that big 1 liter bottle of 100mg/ml unflavored we saw on the web at a great price? Just how much e-juice could I make from one of those dogs. First, how much Nicotine is there? 1000 X 100 = 100,000 milligrams.
Since I normally vape 12mg/ml e-juice let’s try that. 100,000 divided by 12 gives us about 8333ml Total Final Volume. That’s more than 8 liters of 12mg/ml e-juice. That just might be a little much for a ‘first batch’. Let’s try something smaller.

Example 3:
Maybe a 250ml bottle of 50mg/ml unflavored for a total Nicotine content of 12500mg.
And let’s make 15mg/ml e-juice this time. 12500 divided by 15 = 833ml of juice. Still a lot of e-juice but not quite in the eccentric hoarding category. Almost, but not quite.

Example 4: Using the same unflavored bottle from example 3 we could make about 520ml of 24mg/ml e-juice.

Practice these calculations, try different values. You must be able to calculate juice strength. If you need help performing these calculations, ask for help. Don’t start mixing until you can.

Another unit of measurement I use is milligrams of Nicotine per dollar (mg/$).
If we bought three 30ml bottles of flavored 24mg/ml ‘store bought’ e-juice for $10 each and paid $4.95 shipping, what is the mg/$ value for this order? Tick, tick, tick, times up.
We got 2160mg of Nicotine, in a vapeable solution for $34.95. That comes out to 62mg/$.
Try again. A five bottle sampler for $29.95, with 20ml bottles and strength of 18mg/ml. Did you get 60mg/$? I did. Now, why does this matter? It helps me compare prices and shop for bargains in bulk unflavored e-juice.

Using your average daily consumption, calculate how much juice you use for 1 month, 3 months, a year. How many ml and how much total Nicotine (mg) do you go through each month? What is the cost in ml/$ and mg/$ of the e-juices you have been buying? What cost would make it worth your while to take up mixing your own? Determine where you are and where you want to go. Just remember that you also have to buy the PG and/or VG diluents and that 1000ml of 100mg/ml juice you found on-line really cheap is going to make a heap of diluted juice. Maybe more than you really need. Shoot for a 1 to 3 month supply at first, maybe less than a liter of diluted e-juice.

Note: No algebras where harmed in the above examples.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 06-29-2011 at 11:36 PM..
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Old 06-28-2011, 10:18 PM   #4
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Chapter 3 Ingredients-It’s Time to Shop

If the safety issues discussed in chapter 1 or the complicated (not) calculations in chapter 2 haven’t scared you off, then it’s about time to start shopping. You will need to select a supplier for each of the ingredients of your desired e-juice mix. If this involves buying from more than one source then shipping charges make pricing more complicated. I’m not going to tell you where to buy your supplies but I’ll give you a few things to watch out for.

Plan out what you want to accomplish. Just how big a batch do you want to make? Figure out how much e-juice you go through in a month. How much total Nicotine. Then, how big a batch do you want to mix up. Prepare a shopping list estimate of the NIC juice, PG and VG you will need to make that big a batch. Then select one or two simple flavors and get about 10% of that batch size in each flavor. If you plan on making a whole liter of diluted e-juice, then get a 4 oz. bottle (about 120ml) of each flavor, and make two 500ml batches which you can blend together later if you want. You’ll have some flavor left over, but probably cheaper than getting 3 dozen 4ml bottles. Calculate the initial mg/$ of the unflavored bulk Nicotine liquid as well as the mg/$ of the final flavored mix using the cost of the Nicotine, PG, VG, Flavors, etc. If you shop you should be able to produce a liter of diluted e-juice (18 to 24mg/ml) for about 10 cents a ml , or $3 for a 30ml bottle. What, you’ve been paying more?
Then pick a supplier that has been selling the product you want for several months and search for objective feedback from past customers. Don’t just dive in and buy the biggest bottle of the strongest juice you can find because it was cheap.

PG and VG; which one should I buy?
You should already have a general idea of which you like before you start mixing. Try ‘store bought’ e-juice in both PG and VG formulations before buying your DIY supplies. Since many vapers are not completely satisfied with either PG or VG based e-juice, a blend would probably be a safer bet for a large DIY batch. Prices for either are comparable so go with something in the middle. 50/50 works for me, but if you have a real preference for one or the other try 25/75 or 75/25. And if you use Glycerin, use Vegetable Glycerin, not Glycerin for rubbing on baby butts from the skin care isle at Wally World.

A word of caution about flavors. The more exotic sounding a flavor is, the more ingredients it probably has in it. Unless you can evaluate the stability of these ingredients for long term storage, I would recommend sticking with flavors that sound simpler. I have no idea what chemicals it would take to make Ham and Eggs flavor, or waffles with maple syrup. Simple clear fruit flavors like Black Cherry, Strawberry, or even the Tobacco flavors or extracts would probably store better. I take exception to this rule in that I like Red Bull flavor and have no idea what chemicals are in it.

A small amount of your DIY batch in a simple flavor could be added to some of your ‘store bought’ flavors to spread then out some. Pick a couple of flavors that you like and start shopping. I dispense from my bulk stash, some Red Bull, a little Black Cherry, and add it to some Cigarette type flavor and keep that out on the counter as my normal vape.

Shopping for good prices, combining shipping charges, and looking for a good deal from a reliable vendor can take a lot of effort. The end result is worth it because in addition to saving money you can take pride in vaping your own concoctions without puking. Here’s a sample shopping list just for reference:
250ml of 48, 50 or 60mg/ml Nicotine, unflavored;
250ml of PG;
250ml of VG;
4 oz. of Flavor 1;
4 oz. of flavor 2;

Buy quantities close to what you estimate you will need. Unless you mix a lot of e-juice, I don’t want to know what the last 250ml of that gallon jug of PG looks like. The shopping list above should run you less than $100 and yield about 820 ml of 15 to 18mg/ml diluted e-juice.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 06-30-2011 at 12:49 AM..
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Old 06-28-2011, 10:18 PM   #5
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Chapter 4 Setting up a Temporary Lab

If you are like me, you’ll be mixing e-juice in the kitchen. Plenty of counter space, good lighting, running water, close to the bathroom, electrical outlets out the waszzu, and close to an emergency exit (the back door). Pick a time slot that will give you undisturbed access. So don’t do this while the wife is preparing dinner.

You need to pre- clean and setup your lab ware, supplies and cleanup materials in advance. Disinfect the countertops and anything close by that you might have to handle during the process. Pre clean all lab ware, pots and pans, etc., and set all raw materials out a couple of hours in advance to come to room temperature. ). Rinse all containers and do a ‘smell check’. If you smell soap, rinse again. Cover the counter top with a strip of paper towel and put a bath towel on the floor to stand on. This will allow you to contain any spills and rapidly remove a large spill by wadding up the towel and tossing it outside.

NOTE: performing the actual mixing operation in a flat shallow plastic pan will immediately catch any spilled liquid and allow you to easily move it outside.

Cold liquids don’t mix well but don’t warm NIC juice, PG or VG in the microwave. Just let them come to room temperature slowly (don’t forget to set the thermostat for exactly room temperature). I recommend wearing gloves, both as a protection from Nicotine poisoning, and to reduce contamination of the batch you’re mixing. Take the gloves off if you need to scratch. Sometimes I forget.

Buying some basic lab ware might be helpful. A couple student grade 100ml graduated cylinders, glass with a plastic base, can be found on-line for $5 or $6 each. A 10ml syringe or some disposable pipettes will be needed to measure small quantities of flavor and water. We’ll also use the syringe to calibrate the thickness of your DIY batch. Free measuring devices come with the raw materials you bought. The 250ml bottles of VG, PG, or the unflavored juice are good enough to measure with if you use the entire bottle. Think the whole process through before you start and you will find a way to easily measure all ingredients. A half-gallon or two liter juice container with a nice wide mouth, larger than the lid on a two liter coke bottle, is a good mixing vessel. Don’t use a container that had some strange chemical in it no matter how pretty it is.

Mix accuracies of +/- 5% will be more than adequate. You may end up with a final Nic strength 5% low, 17mg/ml or 5% high, 19mg/ml instead of the 18mg/ml you might have been shooting for, but I doubt you could tell. Many mixing errors are sort of self-cancelling anyway, due to the properly of ‘sameness’ exhibited when making multiple measurements with the same measuring instrument.

Before mixing, lay out a pen and paper on the ‘lab counter’. We want to lay out a mixing plan in advance and record everything that goes into the mix, right when it is added. If you remember from the chapter on calculations, we absolutely need to know the total milligrams of Nicotine we put into the mix, and the Total Final Volume of the mix. So, record the NIC as 250ml of 50mg/ml (12,500mg), or however much you put in. Then record the ml of each ingredient as it is added. Don’t forget to record as you go, because you can’t figure it out later. If you’ve never done this before, do a ‘dry run’ with a bottle of water for the NIC, a bottle of water for the PG and a bottle of water for the VG, and a bottle of water for, yup you guessed it, the water. Just go through the motions, and record values just like you plan to with the real ingredients. Don’t forget to record everything you put in the mix.
You might want to set out a bottle of your favorite ‘store bought’ juice. You’ll see why later. You’ll also need storage containers for your mix. If you plan this out right you can use the original containers your NIC, PG and VG came in. Some people like to store their stash in glass bottles. Remember that you will be handling these several times to dispense smaller quantities and you have the risk of dropping the glass each time. Ever drop a glass jar of pickles? What a mess.
Attached Thumbnails
Rocket's DIY E-Juice Mixing Tutorial-ejuicemixrecord.jpg
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 07-27-2011 at 10:44 PM..
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Old 06-28-2011, 10:18 PM   #6
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Chapter 5 Preliminary Mixes

Now that our temporary lab is set up and the liquids are exactly at room temperature, let’s begin.
Start the mix by measuring out the unflavored NIC into the mixing vessel. If you are using the entire bottle of NIC, just pour it in and rely on the label volume. If you bought 250ml, believe it. If not, measure out 100ml at a time with the Cylinder. Don’t use the Pyrex kitchen cup measure, it’s too wide to accurately measure. Drain as much as you can but no need to get it all. If you put in 100ml, drained about 99ml, filled back up to the 100 mark, drained 99ml out of that, filled up to the 50 mark, drained 49 and left 1 behind then you got 247 out of 250ml, that’s about a 1% error. Good enough. The NIC left behind will actually end up in the mix anyway. Your mix record should have each addition recorded. Don’t forget.

PG goes in next. Measure using the same cylinder as you did for the NIC and the residual NIC will not be wasted. The PG will wash it out and into the mix. The error now moves to the amount of PG you added, but still about +/-1%.

Now the VG. This is some thick stuff. If you dump the entire container into the mix, record the label volume. But if adding only part of the bottle then we have to use the graduated cylinder. Pour this into the mixing vessel. Ha, thick stuff, right? Get as much as you can. Add about 10ml of the Flavor to the cylinder and swish around to mix with the thick VG. Add that to the mix and record the ml of VG and the Flavor added. Do the same thing for each cylinder of VG you add and most of it will end up in the mix. It’s so much easier to dump a whole bottle of VG into the mix though.

NOTE: If you are mixing a juice that is mostly VG it might help to slightly warm the VG n a pan of warm water. You can rinse the measure instrument with a couple ml of your thinning liquid (water or ethanol) to get most of the VG into the mixing vessel. Record the VG added and the water added. Repeat as necessary. Use as little thinner at this point as you can to transfer the VG residue.

At this point we have all of our NIC juice, PG, and VG in the mixing vessel, and some of the Flavor.
Use the remaining flavor to rinse any residual NIC juice or VG and pour into the mix. You might reserve some of the Flavor to add after a ‘vape test’. You can always add more to suit your taste. Sort of like adding salt to spaghetti sauce.

Thinning the mix. If you used any VG you will have to thin the mix. I try and make my PG/VG blend about the same thickness as commercial PG based juice. There is no need to put up with thick VG e-juice. There are viscosity curves for VG/water mixes, but we don’t really know the viscosity of our mix, so these aren’t much use other than to notice there is a slow thinning until the water content gets to 5% of the VG then it starts thinning fast. We don’t want to thin too much, as it’s much more difficult to thicken up than thin down. The NIC juice and PG will thin the VG some so go light on the water until you have tested the thickness. Maybe 3% of the VG volume for now.
If you used 250ml of VG, add about 8ml of water. Freshly open bottled water is fine.

We should now know how much Nicotine is in our mix, the total volume, and can make a preliminary estimate of the strength in mg/ml. Remember we still have a little flavor to add, and a little more water, but we are close to the final result. Close up the mixing vessel and thoroughly mix everything together. Roll, slosh, shake, mix it up. Now set it aside, loosen the cap, and let it sit until all the air bubbles have risen and the juice looks clear. Take a break.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 07-27-2011 at 10:44 PM..
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Old 06-28-2011, 10:19 PM   #7
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Chapter 6 Final Adjustments and Testing

Calibrating and testing your batch. Before we add the remaining Water and Flavor we need to do a little testing. Remember the 3% of water we added? That probably was not enough water. I use some ‘store bought’ juice, some that seems to be the ‘right thickness’ and wick well, to compare the thickness of my DIY mixes. Aerated juice with suspended air bubbles will not flow the same. Wait until your mix is clear of all air bubbles. Take a large 10ml syringe and draw up 10ml of the ‘store bought’ juice, remove the plunger and record the time it takes to drain back into the bottle. Maybe do this 2 or 3 times to see if you get the same drain back time. Jot this down. Now draw up the same amount of your DIY mix and determine the drain back time for it. If it takes longer, add a few ml of water, roll the juice to mix (don’t shake it this time) and test again. Thinning your first batch takes a little trial and error. Just don’t go too thin. Record how much additional water you added so we can keep track of the Total Volume.

This ‘baby’ un-aged e-juice will not taste as good as it will later but we need to test vape a little to see if we need more flavor. If you’re not sure you can always wait until later to add the final flavor. A small amount of Flavor will change the strength very little. For example, if you have 800ml of 15mg/ml juice (12,000mg of Nicotine), adding 20 more milliliters, changing the Total Final Volume to 820ml with the same 12,000mg of Nicotine will reduce the strength to 14.6mg/ml. Remember the strength calculations in chapter 2?
When you have thinned and flavored to your heart’s content, set the juice someplace safe, out of direct light with the cap just lightly screwed on. Let it sit overnight before tightening the cap and putting it away.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 07-27-2011 at 02:18 AM.. Reason: typos again
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Old 06-28-2011, 10:19 PM   #8
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Chapter 7 Labeling, Storing and Dispensing

Labeling:
Before putting your batch of delicious DIY juice in the fridge make up a label that includes the strength, date mixed, and flavor. I use a stick-on Avery address label then cover the label with clear tape. PG and VG still manage to get under the tape and blur the writing after a while. Make sure this does not look like any food or drink products in your fridge and don’t use reclaimed food or drink bottles so your stash won’t be mistaken for something edible. Remember this stuff can be dangerous.

I use 16 oz. Vegetable Glycerin bottles to store my DIY stash. You could buy glass bottles but don’t forget my earlier caution about breakage. Look for PETE (recycle code 1) or HDPE (recycle code 2) bottles. Dropper bottles with a rubber bulb may breakdown and taint the flavor of e-juice so I wouldn’t use those for long term storage.

Cold Storage of e-juice
I haven’t been able to actually freeze an e-juice mixture. They will get thick and cannot be used until warmed back to room temperature. Nicotine, PG and VG in e-juice solutions should be safe for several months if the extra ingredients are kept simple.

I’ve read about juice losing flavor, or turning rancid when stored in the household refrigerator and even one brand turning green after being chilled. I’ll go along with not chilling ‘store bought’ juice if it is contrary to the manufacturer’s recommendation. They know what’s best for their juice and what strange chemicals are in it, you don’t. Some do refrigerate juice prior to selling it to you. When in doubt ask. Depending on the chemicals in ‘store bought’ juice there may be a de-mixing, or separation of the ingredients that were blended in a specific order or heated just to get them to mix. Once separated, you may not be able to re-mix them. Crystallization or sedimentation may be signs that the quality of your e-juice stash has degraded. Except those flavored with tobacco extracts where a little sedimentation is expected. Hopefully your ‘store bought’ juice doesn’t have ingredients that are reacting in a cold dark refrigerator and making new chemicals.

I’ve also heard about juice picking up odors and tastes when stored with aromatic foods. Why wouldn’t the juice also pick up smells when stored in a shoebox in your closet, next to your running shoes? Vapor pressure. Most liquids have some vapor pressure, and tend to flood the environment around them with fumes from the chemicals in the liquid. If you are worried, toss the half eaten fish dinner out. Keep the e-juice.


Dispensing from your cold storage ‘stash’.

Do not use cold e-juice straight from the fridge. There is a chance that the ingredients have layered and separated and dispensing a small quantity may have more or less Nicotine or flavor than you expect. Probably not, but why chance it. Let it come to room temperature, mix it up some and transfer some to a smaller bottle (about a week’s supply). Try and keep things as clean as possible. Put the cap back on and return to the fridge.
__________________
A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 06-29-2011 at 09:22 PM..
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Old 06-28-2011, 10:19 PM   #9
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In Summary

DIY e-juice mixing isn’t for everyone. Some really enjoy trying different flavors that just can’t quite be duplicated in the home DIY lab. If you are happy with ‘store bought’ juice, stick with it. But, if you want to try DIY mixing to save a little money, or even just for the entertainment value of Doing It Yourself, then study up and know what you are doing first. Record everything you put in your mix. If you’ve never mixed a DIY batch, read this tutorial twice and perform a ‘dry run’ before working with the real stuff. Once you’ve done this a couple of times it takes less time to mix up a batch that to read this tutorial.

Start small and stay away from the really strong stuff, or pure Nicotine. It’s just too big a risk for the home chemist. Be safe and have fun.

Rocketman
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Last edited by Rocketman; 06-29-2011 at 09:21 PM..
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Old 06-28-2011, 10:23 PM   #10
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Record of Revision
6/28/11 Draft
6/29/11 Initial Release, added Disclaimer to post 1, and mix form to post 5, minor corrections to text.
6/30/11 Added note to post 2 about risk for cats consuming PG.
7/17/11 Added mix photos to post 11 (added text to photos after midnight)
7/27/11 Added larger batch in post 202, using plastic 'catch basin', and notes to posts 5 and 6.
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A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 07-27-2011 at 10:45 PM..
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Old 06-28-2011, 10:24 PM   #11
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7/17/2011
Here is a photo record of a small mix, not my normal fair. The mix goal was to produce a matched pair of 12mg/ml, 50/50 PG/VG, to evaluate two samples sent to me by Mr. X.
I didn't add any fruity flavors, no RedBull (darn), no extra additives, just as simple as I could make it. The two Tobacco flavors (RY4 and ALC) were from FA. The Glycerin was Wilton's and the water was Dasani (0.8ml, she'll never miss it ).
The actual ingredients and volumes are on the mix record in the photos.
I'll start vaping these tomorrow night.


A larger batch can be seen in post 202.
Attached Thumbnails
Rocket's DIY E-Juice Mixing Tutorial-mix-start.jpgRocket's DIY E-Juice Mixing Tutorial-a_mix-1.jpgRocket's DIY E-Juice Mixing Tutorial-a_mix-2.jpgRocket's DIY E-Juice Mixing Tutorial-a_mix-3-copy.jpgRocket's DIY E-Juice Mixing Tutorial-b_mix_start.jpgRocket's DIY E-Juice Mixing Tutorial-b_mix_1.jpgRocket's DIY E-Juice Mixing Tutorial-b_mix_2.jpgRocket's DIY E-Juice Mixing Tutorial-b_mix_3.jpgRocket's DIY E-Juice Mixing Tutorial-mix_steep.jpg
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A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 07-27-2011 at 07:42 PM.. Reason: added post 202
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Old 06-28-2011, 10:35 PM   #12
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Let us have your actual mixing numbers and your comment on flavors.Good tutorial,Btw.
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Old 06-28-2011, 10:39 PM   #13
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Sorry, rocket, I'm afraid you're stuck!
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Old 06-28-2011, 11:19 PM   #14
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Great job Rocket, thanks.
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Old 06-28-2011, 11:35 PM   #15
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Outstanding job Rocky..thanks for sharing your trade secrets...Having never tried, I really want to give this a go now...
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Old 06-28-2011, 11:46 PM   #16
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Thanks so much Rocket for emailing it to me, love the "Do Not Copy" watermark. Now to set up the lab.
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Old 06-28-2011, 11:47 PM   #17
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Quote:
Originally Posted by RY4 View Post
Thanks so much Rocket for emailing it to me, love the "Do Not Copy" watermark. Now to set up the lab.
It's still in draft. Need to do another proof read, insert the mixing form, etc.
I may put it up for a Kindle Freebie.
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A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.
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Old 06-28-2011, 11:51 PM   #18
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Quote:
Originally Posted by Rocketman View Post
It's still in draft. Need to do another proof read, insert the mixing form, etc.
I may put it up for a Kindle Freebie.
I have a Nook Color But I got calibre converter??? If you will, just send me a copy of the final also. I'm gonna print it out to read and try to follow
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Old 06-29-2011, 01:17 AM   #19
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Excellent job, Rocky!
You've just pushed Vapeatron's stock up a notch, and definitely set the bar.
This thread has been bookmarked.
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Old 06-29-2011, 02:02 AM   #20
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Very good job and refreshed my memory. I've been vaping store bought for a while.
Thanks, Rocky, good to have you contributing again.
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Old 06-29-2011, 09:20 AM   #21
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Originally Posted by Rocketman View Post
It's still in draft. Need to do another proof read, insert the mixing form, etc.
I may put it up for a Kindle Freebie.
Kindle freebie would be wonderful! that way I'd have it always.
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Old 06-29-2011, 09:24 AM   #22
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hmmm I wonder if calibre can convert to MS reader too?..could put it on my pocket pc then..easier then lugging the laptop into the kitchen...
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Old 06-29-2011, 09:24 AM   #23
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Great job Rocket

For those of us lazy math minors (hell it wasn't even a minor) there are some online and download calculators.

eJuice Recipe Calculator

eJuice Me Up - e-Juice e-Liquid Recipe Calculator
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Old 06-29-2011, 10:19 AM   #24
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Thank-you Rocky. Read through the whole thing. The e-juice calculator mentioned by ejuice me up is terrific. Stepinwolf included the link. Let's you change the default calculator card to use as a base. You can save new recipes and it also comes with a bunch of sample recipes. Also prints a page wide label for putting on those big batches.

I only make tiny batches as I go, but this has been a great confirmation of what I've been doing. Thanks again.
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Old 06-29-2011, 11:56 AM   #25
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I know there are several e-juice calculators out there. I recommend, since it is so easy to mess up and follow the recommendations of the calculator and not know you made an error (sort of like the "turn left now")
that you do the multiply and divide with a regular 4 function calculator.
If you think about it you can not mess up.

The two important parameters for a batch of DIY are
A-Total Nic in the mix
B-Total Final Volume
The result is the strength.

If you want it to taste right, add flavor to your own taste.
If you want it to vape and wick correctly, thin it, test it, thin it again.

Use a calculator if you must, but understand the math.
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A good e-juice, fresh carto, and 3.7 volts from a REALLY BIG battery works for me.

Nic Juice, Pop Tarts and NATO Ammo, that's where my money's at
SI VIS PACEM PARA BELLUM
Same Sheet, Different Day
The Shutdown was fun while it lasted.

Last edited by Rocketman; 06-29-2011 at 07:43 PM..
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