Crazy_Canuck
Contributor
my point is for safety you should dive it at 36 PPO2 and 21 for nitogen. unless you can analyse it. and yes i have no problem with a small difference in readings. i am a millwright and a small percentage of difference is expected. this only proves that the two readers are accurate. each reader has a small percentage of allowable error. too big a difference would say one of the units is not accurate. i would then seek a third to help determine which one is defective. also then the math would be a way to triple check as well. a little math or a pine box.
