Posted by Jon on January 11, 2001 at 19:16:11:
In Reply to: Do you need HazMat cert to fill NITROX??? nt posted by seahunt on January 11, 2001 at 16:49:29:
When I worked for a dive shop I had to go through PSI to get a cert. to fill and inspect cylinders, but the cert. is only good for 3 years. So every 3 years you have to go through a training course.