Mydas Enriched Air Nitrox Training for Safer and Longer Dives for both staff and our customers.
17th September 2026
Mydas is proud to say that all its staff are now PADI Enriched Air Certified.
A good dive often ends before the tank feels empty. The reason is usually not air supply, but nitrogen exposure. Enriched air nitrox helps solve that problem by reducing the amount of nitrogen in the breathing gas, which can give trained divers more time within no-decompression limits.
That extra time is not automatic freedom. It comes with rules, calculations, oxygen limits, and disciplined planning. That is why proper training matters. Mydas Enriched Air Nitrox Training teaches divers how to use nitrox with confidence, rather than treating it as a shortcut to longer bottom time.
For many recreational divers, nitrox becomes most useful on repetitive dives, reef dives in the 18 to 30 metre range, and trips where each day includes several dives. Used correctly, it can make a dive plan feel less rushed and more controlled.
What enriched air nitrox means for recreational divers
Standard air contains about 21 percent oxygen and about 79 percent nitrogen. Enriched air nitrox, often called EANx, contains a higher percentage of oxygen and a lower percentage of nitrogen. Common recreational mixes include 32 percent oxygen and 36 percent oxygen.
Less nitrogen can mean a longer no-decompression limit at certain depths. That is the main appeal. For example, on a moderate-depth reef dive, a diver using nitrox may have more allowable time than a diver using air, as long as the oxygen exposure stays within safe limits.
The key phrase is within safe limits. Nitrox increases oxygen content, and oxygen has its own depth-related risks. As depth increases, the partial pressure of oxygen rises. If a diver ignores that limit, oxygen toxicity becomes a serious hazard.
So nitrox is not “better air” in every situation. It is a different breathing gas with different planning needs.
Breathing gas | What changes | What the diver must manage |
Air | Standard oxygen and nitrogen mix | Nitrogen exposure and no-decompression limits |
Enriched air nitrox | More oxygen and less nitrogen | Oxygen exposure, maximum operating depth, and gas analysis |
This is why nitrox training focuses less on complicated theory and more on practical decisions before every dive.
Why divers choose nitrox training
Many divers take nitrox training after noticing the same pattern on dive trips. The first dive feels relaxed, but later dives become shorter because residual nitrogen builds up. On liveaboards, island trips, and weekend dive schedules, this can make a real difference.
Nitrox may help divers:
Extend no-decompression time on suitable dive profiles
Reduce nitrogen loading compared with the same dive on air
Plan repetitive dives with more flexibility
Spend more time observing reefs, slopes, and wreck exteriors
Improve awareness of gas planning and pre-dive checks
That does not mean a diver should stay underwater until every limit is reached. Good divers still plan conservatively. They monitor gas, depth, time, current, comfort, and buddy position. Nitrox is one tool inside that larger safety habit.
A diver who learns nitrox properly often becomes more careful, not less. The training builds a stronger habit of checking labels, verifying gas content, reading dive computer settings, and asking the right questions before entering the water.
What Mydas Enriched Air Nitrox Training covers
Mydas Enriched Air Nitrox Training is designed to make enriched air practical and understandable. The course usually centres on knowledge development, gas analysis, dive planning, and correct computer use.
The aim is not to turn recreational divers into technical divers. It is to help certified divers use nitrox safely within recreational limits.
Gas theory without overcomplication
The course explains what changes when oxygen percentage increases. Divers learn why lower nitrogen can extend no-decompression time and why higher oxygen creates a maximum operating depth.
This part matters because nitrox planning is not guesswork. A diver must know which mix is in the cylinder and how that mix affects the dive.
Common topics include:
Oxygen percentage in enriched air
Nitrogen exposure and repetitive diving
Partial pressure of oxygen
Maximum operating depth
No-decompression limits
Oxygen exposure tracking
The theory is practical. It connects directly to decisions made before and during a dive.
Analysing your own cylinder
One of the most important nitrox habits is analysing the cylinder before use. Divers learn how to use an oxygen analyser, confirm the percentage of oxygen, and record the result.
This step is personal. Even if a cylinder is labelled, the diver breathing from it should verify the mix. A wrong assumption can lead to the wrong computer setting or an unsafe depth limit.
A typical check includes:
Confirm the cylinder label
Analyse the oxygen percentage
Compare the result with the expected mix
Mark or record the analysed mix
Set the dive computer correctly
Confirm the maximum operating depth
This habit may feel slow at first. After training, it becomes part of the normal pre-dive routine.
Setting a dive computer correctly
Modern dive computers make nitrox planning easier, but only when they are set correctly. If the computer is still set to air while the diver is breathing nitrox, the displayed limits may not match the actual gas. If the oxygen percentage is entered incorrectly, the maximum operating depth and oxygen tracking may also be wrong.
Training shows divers how to check settings before each dive. This includes oxygen percentage, oxygen partial pressure limit, depth alarms, and no-decompression information.
The goal is simple: the computer should match the gas in the cylinder.
Planning the dive around the gas
Nitrox is useful only when the plan fits the mix. A shallow reef dive may not need nitrox at all. A deeper recreational dive may need careful attention to maximum operating depth. A repetitive dive day may benefit most from enriched air because nitrogen loading becomes a bigger planning factor.
Good nitrox planning asks:
What is the maximum planned depth?
What is the oxygen percentage in the cylinder?
What is the maximum operating depth for that mix?
What are the no-decompression limits?
What is the turn pressure and reserve?
What conditions could shorten the dive?
The training connects these questions to real dive scenarios, not just classroom numbers.
Nitrox can support safer diving when used correctly
The word “safer” needs care. Nitrox does not remove all risk. It does not prevent poor buoyancy, bad judgement, rapid ascents, dehydration, strong current, or low gas. It also does not allow divers to ignore depth limits.
What it can do is support safer planning. By reducing nitrogen exposure for the same depth and time, nitrox can give divers more margin within no-decompression limits. That margin is useful when the dive profile is suitable.
Nitrox is most valuable when it encourages better planning, not when it tempts divers to push limits.
A conservative nitrox diver may choose to keep the same bottom time they would have used on air, while carrying less nitrogen at the end of the dive. Others may use part of the extra no-decompression time for a longer, calmer dive. Both choices can be reasonable when the plan is clear.
The unsafe choice is treating nitrox as permission to stay longer without checking gas supply, oxygen exposure, ascent rate, and conditions.
Longer dives need better discipline, not less
Many divers are drawn to nitrox because of longer dive times. That benefit is real in the right depth range, but longer dives add their own demands.
More time underwater can mean more exposure to current, more gas use, more fatigue, and more chance of separation from a buddy or guide. A longer no-decompression limit does not mean the cylinder lasts longer. It also does not change the need to ascend with a safe reserve.
This is one of the best lessons in nitrox training. Bottom time is only one part of the dive.
A strong dive plan balances:
No-decompression time
Gas supply
Oxygen exposure
Current and surface conditions
Buddy communication
Ascent time and safety stop
Personal comfort and experience
For example, a diver on nitrox may have enough no-decompression time for a long reef swim at 24 metres. If the current increases or gas drops faster than expected, the dive still needs to end early. The best divers do not treat a longer limit as a target. They treat it as room to make calm decisions.
Who should take enriched air nitrox training
Nitrox training fits divers who already feel comfortable with basic scuba skills and want to plan dives with more awareness. It is often a good next step after open water certification, especially for divers who plan to dive regularly.
It is especially useful for:
Divers joining multi-day trips
Divers doing two to four dives in a day
Underwater photographers who move slowly and spend time composing shots
Reef divers who enjoy moderate-depth profiles
Divers who want stronger planning habits
Certified divers preparing for more advanced training
It may be less useful for very shallow dives where no-decompression limits are already long, or for divers who still struggle with buoyancy, air consumption, or comfort underwater. In that case, improving core dive skills should come first.
Mydas Dive Center can help place nitrox training in the right order, so the course supports real diving goals rather than becoming just another certification card.
What to expect during the course
Enriched air courses are usually straightforward, but they are not casual. The practical value comes from doing each step correctly and repeating the safety checks until they feel natural.
A typical course experience may include knowledge review, instructor explanation, gas analysis practice, dive computer setup, and dive planning exercises. Depending on the training format and agency standards, open-water dives may be optional or included.
The training should leave a diver able to:
Explain what enriched air nitrox is
Understand oxygen and nitrogen trade-offs
Analyse a cylinder correctly
Identify the maximum operating depth
Set a nitrox-compatible dive computer
Plan a recreational nitrox dive
Follow safe pre-dive gas checks
The course may involve Staff Training, PADI, Enriched Air, Nitrox concepts depending on the programme structure and the diver’s certification path.
The best result is confidence without overconfidence. A newly certified nitrox diver should feel more prepared, but still careful.
Common mistakes nitrox training helps prevent
Nitrox problems often come from small missed steps. Training reduces those risks by making the steps visible and repeatable.
One common mistake is assuming the cylinder contains the expected mix. Labels help, but analysis confirms. Another is forgetting to change the computer setting after switching between air and nitrox. This can happen easily on dive trips where different gases are used on different dives.
Divers also sometimes focus only on longer no-decompression limits and forget the maximum operating depth. That is a serious error. Oxygen limits matter most when depth increases.
Other avoidable mistakes include:
Using a buddy’s analysed value without checking your own cylinder
Entering the wrong oxygen percentage into the computer
Ignoring oxygen exposure over repetitive dives
Planning to the absolute limit with no margin
Forgetting that gas supply may end the dive before time limits do
A good course makes these mistakes feel preventable, not intimidating.
How nitrox changes the way divers think
The biggest benefit of nitrox training may be mental. It encourages divers to think like planners.
Instead of asking, “How long can I stay?” the better question becomes, “What is the safest plan for this gas, this depth, and these conditions?”
That shift improves more than nitrox use. It supports better air dives too. Divers become more aware of depth, time, ascent choices, computer settings, and buddy checks. They learn to pause before entering the water and confirm that the plan makes sense.
This is why enriched air training remains one of the most popular specialty courses in recreational diving. It gives a clear benefit, but it also builds habits that apply across many dives.
A clear next step for longer and better-planned dives
Mydas Enriched Air Nitrox Training helps divers use enriched air with skill, not guesswork. The course explains the gas, teaches the safety checks, and builds the planning habits needed for longer, calmer dives within recreational limits.
Nitrox is not a shortcut around safe diving practice. It is a useful tool for divers who respect limits and want more control over repetitive dive days. Learn the mix, analyse the cylinder, set the computer, plan the depth, and keep a safe margin.
That is how enriched air turns from a label on a tank into a smarter way to dive.
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