I am trying to split up my big bottles of e-liquid into smaller bottles, anyone done this before? i want to let my friend have a couple samples but i have no idea how it would be possible. I hear using a syringe works but pharmacy wont give me any because i am not a diabetic or have a medical prescription requiring one. Any ideas??
First of all, you're going to want to practice practice practice using plain old bottled water, so you can get used to the process and equipment you'll be using and see what hitches and Murphy's Laws you'll likely run into.
Raleys has a two-pack of little glass eyedroppers about 3-4 inches long, over in the baby/travel sample aisle, across from the plastic baby syringes and baby dosing spoons marked in ml's. You'll find plastic food-safe bottles in a 4 or 6-pk over in the camping/lightbulbs/cuphooks aisle. They're actually less expensive than the travel bottles over in the baby aisle. Over in the baking gadgets aisle, you'll find a turkey 'injector' syringe used for injecting broth and butter into turkeys and roasts, and also funnels. You can use the baby syringe to measure mls, using the eyedropper or turkey injector to fill the baby syringe. You'll also find medical-style gloves over by the pharmacy. Check out 99cent store for gloves, painters' goggles, rainponcho for an apron and either a cheap plastic tablecloth for a work surface/waterproofing (tape it down - trust me on this!) or even a shallow plastic washbasin type container that can contain spills and you can set your main and mixing bottles inside of as you work.
Once your liquid is drawn in the eyedropper from the main bottle, excess doesn't go back into the main bottle, right? Otherwise you're contaminating your main bottle. If you take out too much, squirt it into your intermediate bottle.
If you have to pour, try a two-stage transfer from biggest bottle to an intermediate bottle. Use a funnel. A good way is to put the intermediate bottle in a sturdy ceramic-type bowl or other suitable container, stuff papertowels or newspaper into the bowl all around the intermediate bottle to hold it in place, and then pour from the bigger bottle into a funnel, using both hands to pour slowly. Cap biggest bottle and put it away. Then you can transfer from intermediate bottle to the smaller bottle in the same way.
Wear eye protection. And gloves. And a long-sleeved shirt. And a poncho apron. [And if your friend laughs at you for being all space-suited up, remind them that you're dealing with a hazmat material and also that e-liquid is not a toy. Remind them 2mls of 36mg/ml absorbed thru the skin could be serious, 911-type serious stuff. They will respect your getup real quick.]
do a few dry runs with water first!!! to get comfortable with your equipment.
(did I mention that already?

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Decontaminate! You don't want Aunt Susie to inject your Thanksgiving turkey with nicotine residual in that turkey injector, so keep your supplies under lock and key!
Other than that, have fun! be safe!
Hope this helps!