Question for Fog / Haze-Juice Chemists...

[Humphry]

Yup. The juice is made up of PG (Propylene Glycol) and VG (Vegetable Glycerine). Mixed 50/50 or any other ratio based on supply and personal preference. Some people have issues with PG such as throat irritation, so a VG only juice is sometime the solution.
VG creates the clouds of vapour and also adds sweetness.
PG creates the throat hit.

Ah, interesting. Anyone have any idea what the companies use as the non-toxic preservative for their thinner glycol based fluid?

For my outdoor shows where quality is not a big deal I buy pure Glycerine and mix with about 80% distilled water. Running from smoke machines it smells faintly 'sweet' if you are looking out for it, but better than the cheap fog mixes. It costs me about $2 a gallon but cannot be stored for longer than a week, after which mould develops. I was wondering if there were any remedies to this? I read about a few drops of bleach on a diy fog juice page - but bleach in any concentration feels negligent to me.

If anyone is interested, I would be glad to grab some triethelene glycol / propylene glycol to mix with my Glycerine in different ratios and do some test for smoke machines. I don't own any crackers so wouldn't be able to help there.

[White-Light]

http://www.rosco.com/technotes/fog/Rosco_Fog_Testing_Report_2014.pdf

https://www.actorsequity.org/docs/sa...guidelines.pdf


Unique 2.1 is in the 2nd link and looks like being one of the very best for low levels.