Quote:
| Originally Posted by gordon We have a compressor, and are looking at getting a j of 40% or similar so we can blend nitrox in dirty tanks. |
Hummm....
30% fill in a 12L using 40% and air.
I make that 108bar of 40% to give 230 final pressure.
So a 50L J into 12L tanks you get about 5 fills before the tanks have equalised and you can't have 30% again.
Pure oxygen needs 25bar so you get about 30 fills.
I trust it's the cheap-skates that won't pay for cleaning that are going to haul the J about and get it filled because that feels a poor deal to me.