Vendors that voluntarily disclose contents and provide 3rd party testing results. If the listed ingredients seem kosher then they would see my money. I would be perfectly fine with them also having a blue colored liquid in their line. I just wouldn't pick that particular one.
Buy elsewhere.
I think Posting Independent 3rd Party Verification of what is in an e-Liquid would be a Fantastic Step in the Right Direction.
Where do I buy Diacety Free e-Liquids if I don't Know if what the vendor Claims is True?
This is where Independent Testing May Help.
"Funny, I consider the current situation to be a middle ground. Most vendors disclose the primary ingredients to some extent. If a consumer has concerns that are more specific, they can search that information out. If a vendor puts something in a liquid that is recognized as legally harmful, they can be found liable for any damages/injury that results. If vendors are found to be dishonest in their disclosure, consumers can choose to purchase elsewhere. Just because they don't HAVE to disclose, doesn't mean that they WON'T."
If a vendor makes a claim, that is found to be false, I believe they are subject to litigation or could be if a case for harm can be made.
It's already being done by several Canadian vendors, I'm sure there are some US ones too. Vote them with your wallet.
There is also AEMSA members.
AEMSA | American E-Liquid Manufacturing Standards Association
But the Concept of AEMSA was meet with Very Mixed Reviews.
A vendor can disclose and test without necessarily being an AEMSA member.
Find one that has a product you like and stick with them.
I agree.
I just Posted AEMSA because I was Unsure if You or anyone else knew what they Are. And what they Do.
If given 2 Black and White Choices, Vendors can put ANYTHING they want in an e-Liquid and not have to Disclose Anything, verses Government Regulations as to what Ingredients are considered GRAS, I would have to go with the Later.
Tuff Choice. But I is what it is.
A Shame a Middle Ground can not be Found.
Trouble is the list of ingredients considered to be GRAS compliant might be really short.
Trouble is the list of ingredients considered to be GRAS compliant might be really short.
Maybe. Maybe Not.
Flavoring Percentage in an e-Liquid is going to Play a Big Role.
And if a Flavorings is Shown to be a Problem, Isn't this something that people should Know About? Kinda that Informed Choice thing.
And Besides. People can Add Any Flavorings (or Colorants) via DIY if they want. Right?
So it keeps getting back to a Vendor can put ANYTHING they want in an e-Liquid. And it is up to the Consumer to Choose if they want to Inhale it. Knowing or Not Knowing what they are Inhaling.
Not going to Debate Right or Wrong on this. But in the USA that we live in Today, I don't think this is Going to Fly.
I'm pretty sure the number of items on a list of ingredients considered GRAS for repeated daily inhalation in a personal vaporizer is exactly 0. Not because they aren't "safe" but because they haven't been fully tested in this application.
Just because something is not on the list as GRAS, does not necessarily mean it is a problem, that is the point.
Didn't say it was. Didn't say it Wasn't.
But wouldn't it be Nice to Know that a Flavor has been shown to be GRAS for Direct Inhalation in the Amounts that are seen Daily by Vapers?
That would be right up there with Dow selling PG to anyone who wants to use it -- except ejuice makers. 
no they can't put anything they want in e-juice.
if they make e-juice by definition they are using
FDA approved food or pharmaceutical grade
PG,VG,nicotine,flavors,colors and distilled water.
anything else is not e-juice per say.
some are extracting flavors and steeping tobacco
leaves but readily admit to doing so.
there is no vendor to date just dumping any old thing into e-juice.
mike
It would, but considering how things are going, it wouldn't surprise me one bit for the FDA to come out and say that all those GRAS food flavors (safe for DIGESTIVE INGESTION!) are poisonous for inhalation!That would be right up there with Dow selling PG to anyone who wants to use it -- except ejuice makers.
Andria

By definition...Really?
I guess Dekang and Liqua aren't really making e-liquid. Their ingredients aren't always FDA approved or pharma grade... Dekang even uses something which they call 'tar'...