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Old 2019-12-21, 1:25pm
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nnantel nnantel is offline
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Join Date: Dec 21, 2019
Location: Las Vegas, NV
Posts: 15
Default Flame color on oxy con

Hi All,
I've been lurking on this site a while now and finally got my studio sufficiently "done" to melt glass and of course I need some help! Couldn't find the answer to my problem using search.

I'm running a GTT Scorpion's Bobcat center fire on an EX-20. I can melt boro easily enough but not getting the expected bright yellow sodium flare; it's orange and not painful to watch. It doesn't look like the flame I was seeing during classes, which was on tanked O2. I'm questioning the oxygen purity and whether it's even the ~92% I should get from oxy cons? The low purity light is not on and adjusting the EX-20 flow & propane doesn't help.

Any thoughts on whether this is normal for oxy cons or if there is a problem with this particular EX-20 unit? Maybe a specific color test would help? I've got lots of colors to try if someone can suggest one.

Thanks for any insight and I look forward to returning the favor in due course.
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