SSI Nitrox Specialty in Koh Phi Phi
SSI Nitrox extends bottom time through enriched-air gas mixes up to 40 percent. The Koh Phi Phi programme covers theory, two Nitrox dives and certification for 9,000 THB.
About the programme
The SSI Enriched Air Nitrox Specialty at DPM Diving in Koh Phi Phi teaches divers to plan and conduct dives using enriched air mixtures containing up to 40% oxygen. Nitrox reduces nitrogen loading at a given depth compared to standard air (21% oxygen), allowing longer no-decompression limits at moderate depths — a practical advantage on multi-dive days and liveaboards. The course covers theory on oxygen toxicity limits (the maximum operating depth for each mix), gas analysis with an oxygen analyser before every dive, dive planning with enriched air, and the use of dive computers switched to Nitrox mode.
Two open-water dives using Nitrox are included. On completion you receive the SSI Enriched Air Nitrox 32% or 40% certification, internationally recognised and valid for life. The price of 9,000 THB includes full dive equipment, a professional SSI instructor, dive insurance and lunch.
A National Marine Park Fee of 600 THB applies on the day of the dives (paid separately in cash). Prerequisites: a valid Open Water Diver certification or higher. A standard SSI medical questionnaire is completed before water entry.
Bookings via WhatsApp.
Why dive Nitrox in Koh Phi Phi
The sites that reward extra bottom time here are the deep ones. On the King Cruiser, air limits cut the wreck short just as you reach the interesting deck; on the Bida walls, twenty-five metres is where the barracuda and the leopard sharks are. Enriched air buys the minutes that turn those into complete dives.
It also helps on repetitive days: the boat runs several sites in a row inside the Marine National Park, and shorter surface intervals mean you can dive Shark Point and Anemone Reef the same day. With 27-30 °C water and no cold to cut the dive short, gas planning is usually the only real limit.
Dive sites are chosen on the day according to weather and sea conditions.
100% online booking
Booked with one WhatsApp message
No forms on the website and nothing to print. Everything happens on your phone, from your first message to your last dive.
- Message us on WhatsApp Tell us the course, the destination and your dates, and we reply with availability and prices.
- Confirm your booking You receive your booking code (for example, DPM-2PB4F) and a payment link to confirm your place.
- Register in minutes With that link you fill in the medical form and sign it online, which takes about 4 minutes.
- Follow your course From then on, your course diary shows what's done and what's left: booking, registration, dives, final payment and certification.
All set! Your code: DPM-2PB4F
📝 Complete your registration (medical form + signature):
https://r.dpmdiving.com/en/DPM-2PB4F
🤿 Save this link — it's your day-by-day course journal:
https://r.dpmdiving.com/en/mi/DPM-2PB4F
💳 If you pay by bank transfer, write this code as the reference and send us the receipt:
DPM-PP-1015-37PNXD
See you at the front desk!
Included with your course
Your whole course, organised on your phone
From your first WhatsApp message to your certification, the whole process is 100% online. Our Mareaviva app takes you through your course day by day, before and after every dive.
Course tracker Every day of your course is laid out in the app, so you always know what's planned and what comes next. You know who your instructor is, and they follow your progress in the app from start to finish.
Dive briefing Each dive comes with its briefing: the site map and the dive plan, with time, entry and exit points, maximum depth and expected dive time.
Dive plan Start time, entry and exit points, maximum depth, expected dive time and the safety stop, drawn as a dive profile.
Species logbook See which marine life to look out for on each dive, then tick off the species you actually spot.
Photo pack When you finish, you get a pack of underwater photos from the best sites around your centre: not pictures of your own dive, but a keepsake to take home.
Surprise prize When you rate your instructor you always get a surprise gift: it could be a discount on another course or even a free course, chosen at random.
All of this is included in the 9000 THB. Send us a message to get started: we reply at any hour.
Book Nitrox Specialty on WhatsAppFrequently asked questions
What is Nitrox and why would I want it?
Nitrox (enriched air) contains a higher percentage of oxygen than standard air — typically 32% or 40% compared to 21%. At moderate depths (18-30 metres), this reduces nitrogen absorption and extends your no-decompression limit, meaning you can stay at depth longer. It is particularly useful for multiple-dive days or liveaboards where bottom time accumulates across dives.
