There are conflicting ideas on the recipe of EM Crystals.
TFA states....
These can be dissolved in alcohol or Propylene Glycol @ 10%. (use a little heat)
typically in PG.
EM is a poison, so you
do need to be careful with your ratios.
One recommended ratio is 1/4 tsp per 10ml's
But other sources say:
http://www.e-cigarette-forum.com/fo...rystals-mixing-ratio-pg-create-sweetener.html
1 gram (0.20 teaspoons) of EM is soluble in 17ml of PG (or a 1/4 teaspoon is soluble in 21.25ml of PG)
http://www.e-cigarette-forum.com/fo...o-i-mix-ethyl-maltol-crystals-no-alcohol.html
To make a stable clear solution of EM I use 500 mg EM in 10 mL of 50-50 PG/VG base from a syringe.
I am of the belief that a 5% solution is good enough.
So, I would go with either of the second recommendations,, and not the 1/4 tsp per 10ml's
Or the over saturated method, not explained in this post.
You would want to let this sit for 1 week and shake every day.
Do not cheat it. Trust me, this stuff gets very powerful over time.
You would then add 1 or 2 drops per 10ml's of juice, typically 1 drop from a eye dropper or plastic dropper bottle
Using a syringe will depend on the size of the Blunt tip needle you are using.
The larger the size the less drops you would use.
You may not notice it right away, it takes time to steep for the sweetness to come through
Trust me when I say,,,, If you over do it, it will eventually taste like crap.
Good Luck