20406080100 Nitrogen 0 100 20 40 60 80 O x y g e n 100 80 60 40 20 0 F u e l S t o i c h i o m e t r i c l i n e Flammability Zone LFL UFL MOC A Upper limit in pure oxygen Lower limit in pure oxygen Air Line OBJECTIVE: Stay out of Flammability Zone!
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