Problem is, when you're using 25% argon/75% CO2, you're also releasing 3 times as much CO2 as you are argon. In a confined space, that CO2 will displace the available oxygen...THAT's where the need for ventilation comes into play, because it's the CO2 removed from the bloodstream via the lungs that the body expels, and the body seeks to replace that with oxygen-rich air....which it can't get in a CO2-rich atmosphere.
I'm not a doctor, and I don't play one on TV...but I have welded with Ar/CO2 mix.
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Today's Featured Article - Tractor Profile: Ferguson TO-20 - by Staff. When the infamous "Handshake Agreement" between Henry Ford and Harry Ferguson fell by the wayside (that's a story in itself), Harry Ferguson quickly set up manufacturing plants for a United States version of his English TE-20. The TO-20 was relatively the same as the TE-20 except utilized some different casting materials and had a US-style electrical system. The TO-20 was a dead ringer for the Ford 9N and 2N models and they say that Ferguson did this on purpose when the Handshake Agreement wen
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