Here is the math I came up with: (Please bear with the mixed imperial and metric units, it works out in the end)
100% relative humidity at 70F has a water concentration of 19.5 grams per cubic meter (I found that on the internet so it must be true)
A 30 minute SCBA tank compressed has 45 cubic feet
There are 35.31 cubic feet in a cubic meter
So there is 1.27 cubic meters in a 30 minute SCBA
At 100% relative humidity there is 1.27 X 19.5 = 24.765 grams of water
At 8% relative humidity: 24.765 X 0.08 = 1.981 grams (since water generally has a density of 1, grams and ml would be the same)
So basically there is about 2 milliliters of water that potentially could get in the bottle.
I have no idea how efficient the oil/water separator is on a Yong Heng so let's guess 50%, that leaves 1 ml that gets into the bottle without anything beyond the separator.
The question then becomes, does any of that remaining water condense in the tank or gun to an extent that matters?
