John,Right now I only have a 30 minute fire fighter scba tank.Taso
Yeah. The formal testing labs are pricey. You're talking $200+ to have one sample analyzed. Dive shops have to do it, but that is too expensive for us air gunners.However, there ARE some reasonably priced (<$100), visual, high pressure, humidity indicators that will let one check moisture level coming out of a Shoebox or other high pressure compressor. Some dive compressor owners who want absolute certainty that their output is dry use them. These change color if humidity goes up and have a clear window built to withstand 6000 PSI pressure.Because they work on the HIGH side output, they indicate what is actually coming out of the system and warn you before you put excess water vapor into your tank.www.augustindustries.com/visual-indicator-ind-mois.asp $60www.augustindustries.com/moisture-indicator-disk-kit-mois.asp $11Cool! looks like I'm allowed to post actual links now.
I never did end up adding one on my Bauer Jr. It already has a grade E air rated system and I'm going to replace the cartridge earlier rather than later.It still tempts me as a backup to warn if my P21 filter is getting spent before rated life. It would fit on the fill whip, just before after the hose and before the gauge and valves. Would need a few fittings. That's why I'm referring to it as $100. That's with some fittings.