Cylinder question (color) - DAN Kit

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Very easy solution...ABO. Aviation Breathing Oxygen. No need to interpret FDA regulations. No script required. Still tracked by lot numbers.
You are right except last I knew it was costly compared to other forms.

Oxygen hacker had a good write up on it. all the O2 was the same in reality 99.99% pure or better. industrial was put in tanks and sent out. med required vac of bottles prior to refilling and had to be 80% or better. and air grade has to be dried gas at something like 85% or better. the fill tanks has dry 99.99% O2. Every time i see this it torques me becasue at one time I needed a intake filter for my bauer captitano compressor. it looked familiar to ones i used at work. funny they both led to the same National stock Number. bauers was 60.00 and they were at work under 5$. Bought on internet for 7$ after searching the part number..
 

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