Originally Posted by TS1955
The yellow tint is from sulfur dioxide. It is a chemical put in "RACE" grade NOS. That is what seperates it from the medical grade.
TS1955
I concur
Yeah, that stuff is to keep idiots from huffing it.
Didn't phase my neighbor though, came by when I was taking my bottle our for a refill, he asked is it empy? I said yeah, he grabs it takes 2 big hits and said no it's not :shock: I just shook my head.