Nitrox Equipment

[ScubaScottland]

What does this mean? You ask for 36 and you get 35, or the % o2 is changing from the time you leave the shop to the time that you do the dive? How are they filling PP or pre-mix?

It means that I don't trust the shop at all....double check it...I have asked for 40% on several occasions and received 35, 35.5...etc...way off. Asked for a redo...just don't have all day to burn up waiting for them to get it right.

 

[HowardE]

It means that I don't trust the shop at all....double check it...I have asked for 40% on several occasions and received 35, 35.5...etc...way off. Asked for a redo...just don't have all day to burn up waiting for them to get it right.

That must suck. There are no other shops around?

 

[ScubaScottland]

Not in my town.....that shop is 1.5 hours away. Hopefully Nitrox availability will get better the next few years...if I will travel a bit further there are other shops. My LDS doesn't fill Nitrox, yet teaches it. I believe this shop I go to for Nitrox uses a membrane system...they pull the O2 from a cascade, it mixes in a canister to the 'right blend', then it is pushed through the compressor to the scuba cylinder.

 

[stever2002]

I trust my LDS. I took my Nitrox class from them and they are 100% by-the-book. If I show up for a tank of Nitrox, they pull out the O2 analyzer let me calibrate it and read the tank, or they do it while I watch. Then I initial the tank and sign the log.

Its when I'm traveling that I'm nervous. I rent most of my dive gear, and although I like to dive nitrox, the analyzer is behind other things on my shopping list (like BC, Regs & Gauges). So when I ask for Nitrox, I usually ask for it ala "If I can watch you calibrate the analyzer and read the tank, I would like Nitrox. If you can't support that, I'll just take an air fill today." Its worked well so far.

Just my $0.02,

...steve...