During your Open Water Diver course, you learned some of the limits of diving on normal air, and how nitrogen affects the body when we go scuba diving. During our dives, nitrogen is absorbed into our body tissues and this limits our diving depth and time. As you learned in your Open Water Course, too much Nitrogen can be a bad thing.
Enriched Air gas mixtures contain more oxygen and less nitrogen which means that during a dive, our tissues are exposed to a lower partial pressure of nitrogen. This lower nitrogen partial pressure results in less nitrogen being absorbed by the body during a dive.
During your course with us, you will normally be diving with 32% Enriched Air Nitrox, that is approximately 32% oxygen and 68% nitrogen.
Many Nitrox divers also claim to feel much less tired after diving on Nitrox, and for those of you who are feeling a little less fit than you used to be, less nitrogen in your body can only be a good thing - especially if you're planning a multi-day diving trip.
The Nitrox theory typically takes 2 or 3 hours and is completed the day before your Nitrox dives. The theory session is followed by a trip to our local 'Nitrox' filling station where Nitrox production will be explained and you can see the system for yourself. You'll also analyse your own tanks for 2 dives on Nitrox the following day.
During your course, you'll also learn how to use a Nitrox diving computer, how to set and check the computer. If you don't have your own Nitrox dive computer, we'll give you one to use during the course for free.
Whilst scuba diving is a very safe activity, it is important to know that you are fit to dive and that you do not have any medical conditions that could increase your risk of an accident underwater.
Download and read the Diver Medical Statement
If you answer 'yes' to any of the medical questions, please print the entire form and take to your family doctor who will assess your fitness to dive and issue a medical statement which we must see before you start diving.