Hey all, this is a bit of a dead thread, but just in case anyone stumbles across it. I had the same question regarding the Tradeflame 930ml Oxygen cylinder; is it going to be ok for homebrew. I asked a professional brewer who said i should really go with medical oxygen just to be safe (from contaminants). So i called supergas and long story short the fellow said he might be doing himself a disservice but that it was his impression that as long as we were using a disposable oxygen cylinder, Tradeflame oxygen would be fine for brewing. he said that the reusable oxygen bottles aren't cleaned but just refilled and it's possible they may contain traces of other industrial gasses due to naughty regulators. medical oxygen however, is cleaned and that's how they can guarantee it for medical use. Also the regulators are $500 and all stainless, plus the bottles are $10 a month plus gas (~$50 for the small one iirc). He said he can't be sure sure unless the Tradeflame oxygen is actually tested, but he was confident we wouldn't have any issue. As it happened i got impatient and bought the bunnings Tradeflame oxygen ($53.86) before he returned by call, so i was somewhat happy at his suggestion. Regarding the regulator, bunnings also stocked the "Tradeflame Regulator Conversion Kit" which is a mini reg, tap and 6mm barbed fitting on the outlet ($39.97). Same as Hutch's post above, except without the gauge. So i'm happy, now just need a sintered stone and I'm ready to roll. Grain and grape have a range of sintered stones and piping, and in particular some inline air filters.
