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- By CategoryMixed GasesGas Comp Amount299.9950000Gas Comp Amount150.0000000 99.9000000 84.0325000 99.9987500 74.9500000 99.9739500 99.9948400 99.9999990 99.9964000 99.9910000Gas Comp 1PPM NITROGEN DIOXIDE NITROGEN PPM AMMONIA HELIUM 3