Personally, I'd be leary.
I purchased some "Freeze 12" about a yr. ago thinking that I was purchasing an R-12 replacement. Later on I stumbled across some info about it and learned it was 80% R-134 and 20% R-something-or-another...forget what it was.
You can buy R-134 for half of what these guys want for this Glacier product. It would be interesting to know what the content of it was before purchasing?