I use the oxygenation rates quoted in Chris White's and Jamil's Yeast book. The experiments White Labs performed showed that using pure 02 at a flow rate of 1L/min with a 0.5 micron stainless steel sintered stone, in a 1.077 SG 20L Wort at 24C, resulted in 9.2ppm for 60 secs and 14.08ppm for...