{"product_id":"tdi-advanced-nitrox","title":"TDI Advanced Nitrox Diver Course","description":"\u003cdiv style=\"padding-bottom: 28px;\"\u003e\n\u003cp style=\"font-family: 'Quicksand',sans-serif; font-weight: bold; color: #14295f; text-transform: uppercase; letter-spacing: .5px; font-size: 1.15rem; line-height: 1.3; margin: 0 0 12px;\"\u003eTechnical Diving · Enriched Air to 100% · For Certified Nitrox Divers\u003c\/p\u003e\n\u003cp style=\"font-family: 'Mulish',sans-serif; font-size: 1.15rem; color: #3d4756; line-height: 1.6; margin: 0 0 14px;\"\u003e\u003cstrong style=\"color: #14295f;\"\u003eWhere enriched air becomes a technical tool.\u003c\/strong\u003e Advanced Nitrox certifies you to dive any mix from EAN 21 up to 100% oxygen on no-decompression dives to 130 feet, teaching the real physics and physiology of high-oxygen diving, oxygen limit planning, and oxygen-clean gear. It's a true technical certification and the foundation the rest of the tech path is built on. For most divers it's taught together with Decompression Procedures. You'll need your own mask, fins, boots, and snorkel, plus oxygen-compatible cylinders, regulators, and a BCD, and we'll help you sort configuration and what to rent versus own.\u003c\/p\u003e\n\u003cp style=\"font-family: 'Mulish',sans-serif; font-size: 1.02rem; color: #3d4756; line-height: 1.55; margin: 0;\"\u003eVeterans can put their \u003ca href=\"\/pages\/gi-bill-scuba-certification\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eGI Bill\u003c\/a\u003e toward their training, and families can use \u003ca href=\"\/pages\/arizona-esa-scuba-certification\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eESA or ClassWallet funds\u003c\/a\u003e. See if you qualify.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!--DPD-SPLIT--\u003e\n\u003cdiv style=\"--navy: #14295f; --steel: #3f7fa6; --blue: #4a90c2; --coral: #e07a5f; --incl-bg: #e9f3fb; --incl-accent: #3f8bb0; --excl-bg: #fdeeeb; --excl-accent: #e07a5f; --callout-bg: #f4f7ec; font-family: 'Mulish',sans-serif; color: #2c3340; font-size: 22px; line-height: 1.6; max-width: 1040px; margin: 0 auto;\"\u003e\n\u003csection style=\"text-align: center;\"\u003e\n\u003ch2 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; font-size: 46px; font-weight: bold; margin: 0 0 12px;\"\u003eTDI Advanced Nitrox Diver Course\u003c\/h2\u003e\n\u003cdiv style=\"font-family: 'Quicksand',sans-serif; font-weight: bold; color: #3f7fa6; text-transform: uppercase; letter-spacing: 1px; font-size: 20px; margin: 0 0 24px;\"\u003eTechnical Diving · Enriched Air to 100% · For Certified Nitrox Divers\u003c\/div\u003e\n\u003cp style=\"max-width: 900px; margin: 0 auto; font-size: 25px; color: #3d4756;\"\u003eAdvanced Nitrox is where enriched air becomes a technical tool. Instead of the recreational cap, this course certifies you to dive any mix from EAN 21 all the way to 100% oxygen on no-decompression dives to 130 feet. You'll learn the real physics and physiology behind high-oxygen diving, how to plan with oxygen limits, and how to configure oxygen-clean equipment. It's a genuine technical certification, and it's the foundation the rest of the technical path is built on. It's also the natural next step after \u003ca href=\"\/products\/tdi-nitrox\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eTDI Nitrox\u003c\/a\u003e and \u003ca href=\"\/products\/intro-to-tech\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eIntro to Tech\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003ch2 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 38px; font-weight: bold; margin: 48px 0 8px;\"\u003eWhat it unlocks\u003c\/h2\u003e\n\u003csection style=\"background: #e9f3fb; border-top: 5px solid #3f8bb0; border-radius: 16px; padding: 30px 36px 32px; margin: 26px 0 8px;\"\u003e\n\u003cp style=\"text-align: center; color: #3d4756; font-size: 23px; margin: 0 0 16px;\"\u003eThis is the certification that opens the technical door:\u003c\/p\u003e\n\u003cul style=\"max-width: 860px; margin: 0 auto; padding-left: 22px;\"\u003e\n\u003cli style=\"margin-bottom: 12px; font-size: 23px;\"\u003eDive any mix from EAN 21 through 100% oxygen on no-decompression dives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px; font-size: 23px;\"\u003eGet maximum bottom time out of high-oxygen mixes at technical depths\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px; font-size: 23px;\"\u003eBuild the gas-planning foundation every technical course after this relies on\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 12px; font-size: 23px;\"\u003eQualify to move on to Decompression Procedures and rebreather training\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 26px; margin: 36px 0;\"\u003e\n\u003cdiv style=\"background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 8px 22px rgba(20,41,95,.06); border-top: 5px solid #3f8bb0;\"\u003e\n\u003cdiv style=\"padding: 30px 32px 34px;\"\u003e\n\u003ch3 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 30px; font-weight: bold; margin: 0 0 14px;\"\u003eWhat you'll learn\u003c\/h3\u003e\n\u003cp style=\"color: #3d4756; margin: 0; font-size: 22px;\"\u003eThis is real technical theory, taught so you can apply it under pressure.\u003c\/p\u003e\n\u003cul style=\"margin: 16px 0 0 22px; color: #3d4756; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eThe physics of higher oxygen partial pressures at depth\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eCNS and pulmonary oxygen toxicity, and how to stay within limits\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eOxygen limit tables and using a computer with high-O2 mixes\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eOxygen-clean and oxygen-compatible equipment, plus an intro to gas blending\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 8px 22px rgba(20,41,95,.06); border-top: 5px solid #3f8bb0;\"\u003e\n\u003cdiv style=\"padding: 30px 32px 34px;\"\u003e\n\u003ch3 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 30px; font-weight: bold; margin: 0 0 14px;\"\u003eIn-water skills you'll demonstrate\u003c\/h3\u003e\n\u003cp style=\"color: #3d4756; margin: 0; font-size: 22px;\"\u003eThe open water dives prove you can hold technical standards in the water.\u003c\/p\u003e\n\u003cul style=\"margin: 16px 0 0 22px; color: #3d4756; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003ePrecise buoyancy control and horizontal trim\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eTeam awareness and air sharing\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eManaging a regulator free-flow\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eControlled safety stops and stress analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection style=\"background: #f4f7ec; border: 1px solid #e6ecd6; border-radius: 16px; padding: 30px 34px; margin: 30px 0 8px;\"\u003e\n\u003ch3 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 30px; margin: 0 0 12px;\"\u003eUsually taught with Decompression Procedures\u003c\/h3\u003e\n\u003cp style=\"text-align: center; color: #3d4756; font-size: 22px; margin: 0 auto; max-width: 860px;\"\u003eFor most divers, Advanced Nitrox and \u003ca href=\"\/products\/tdi-deco-procedures\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eDecompression Procedures\u003c\/a\u003e are taught together as one combined program, since Advanced Nitrox supplies the high-oxygen gases that make accelerated decompression possible. Ask us about doing them as a pair, it's the most common and most efficient path.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 26px; margin: 36px 0;\"\u003e\n\u003cdiv style=\"background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 8px 22px rgba(20,41,95,.06); border-top: 5px solid #3f8bb0;\"\u003e\n\u003cdiv style=\"padding: 30px 32px 34px;\"\u003e\n\u003ch3 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 30px; font-weight: bold; margin: 0 0 14px;\"\u003eWho can enroll\u003c\/h3\u003e\n\u003cp style=\"color: #3d4756; margin: 0; font-size: 22px;\"\u003eYou'll need a nitrox foundation and some real dives behind you.\u003c\/p\u003e\n\u003cul style=\"margin: 16px 0 0 22px; color: #3d4756; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eCertified \u003ca href=\"\/products\/tdi-nitrox\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eTDI Nitrox\u003c\/a\u003e divers, or equivalent\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eProof of 25 logged open water dives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eMinimum age 15 with parental consent, 18 without\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 8px 22px rgba(20,41,95,.06); border-top: 5px solid #3f8bb0;\"\u003e\n\u003cdiv style=\"padding: 30px 32px 34px;\"\u003e\n\u003ch3 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 30px; font-weight: bold; margin: 0 0 14px;\"\u003eWhere it leads\u003c\/h3\u003e\n\u003cp style=\"color: #3d4756; margin: 0; font-size: 22px;\"\u003eAdvanced Nitrox is the launch pad for the rest of technical diving.\u003c\/p\u003e\n\u003cul style=\"margin: 16px 0 0 22px; color: #3d4756; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003e\n\u003ca href=\"\/products\/tdi-deco-procedures\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eDecompression Procedures\u003c\/a\u003e, most often taken alongside this course\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eSemi-closed and closed-circuit rebreather training\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eThe gas foundation for deeper and longer technical dives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003ePairs naturally with the \u003ca href=\"\/products\/side-mount\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eSidemount\u003c\/a\u003e path\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 26px; margin: 34px 0;\"\u003e\n\u003cdiv style=\"border-radius: 16px; padding: 30px 32px 32px; background: #e9f3fb; border-top: 5px solid #3f8bb0;\"\u003e\n\u003ch2 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 30px; margin: 0 0 14px;\"\u003e✓ What's included\u003c\/h2\u003e\n\u003cul style=\"margin: 0 0 0 22px; color: #3d4756; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eInstruction and your open water technical training dives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eThe TDI Advanced Nitrox knowledge materials\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eRental gear available: oxygen-compatible cylinders, regulators, and BCD\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eYour TDI Advanced Nitrox certification on completion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-radius: 16px; padding: 30px 32px 32px; background: #fdeeeb; border-top: 5px solid #e07a5f;\"\u003e\n\u003ch2 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; text-align: center; font-size: 30px; margin: 0 0 14px;\"\u003eWhat to bring\u003c\/h2\u003e\n\u003cul style=\"margin: 0 0 0 22px; color: #3d4756; padding: 0;\"\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003e\n\u003cstrong style=\"color: #14295f;\"\u003eYour own mask, fins, boots, and snorkel\u003c\/strong\u003e (Required equipment. New student gear discount: enrolled students save 10% on all gear purchases, so come into the shop and get fitted by our professional staff.)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003e\n\u003cstrong style=\"color: #14295f;\"\u003eOxygen-compatible cylinders, regulators, and a BCD\u003c\/strong\u003e (required for the course, available to rent from us, or bring your own)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eYour TDI Nitrox certification card and proof of 25 logged dives\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 11px; font-size: 22px;\"\u003eA swimsuit and a towel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection style=\"margin: 46px 0 8px;\"\u003e\n\u003ch2 style=\"font-family: 'Quicksand',sans-serif; color: #14295f;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails open=\"\" style=\"background: #fff; border-radius: 12px; box-shadow: 0 4px 12px rgba(20,41,95,.05); margin-bottom: 14px; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; padding: 20px 26px; font-family: 'Quicksand',sans-serif; font-weight: bold; color: #14295f; font-size: 24px; display: flex; justify-content: space-between; align-items: center;\"\u003eHow is this different from regular nitrox?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 26px 22px; color: #3d4756; font-size: 22px;\"\u003eRecreational nitrox caps out around 40% oxygen. Advanced Nitrox certifies you to dive any mix from EAN 21 all the way to 100% oxygen on no-decompression dives to 130 feet, and it teaches the technical-level physics, physiology, and gas planning behind high-oxygen diving.\u003c\/div\u003e\n\u003ch3 style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; font-family: 'Quicksand',sans-serif; color: #14295f;\"\u003eHow is this different from regular nitrox?\u003c\/h3\u003e\n\u003cp style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;\"\u003eRecreational nitrox caps out around 40% oxygen. Advanced Nitrox certifies you to dive any mix from EAN 21 all the way to 100% oxygen on no-decompression dives to 130 feet, and it teaches the technical-level physics, physiology, and gas planning behind high-oxygen diving.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background: #fff; border-radius: 12px; box-shadow: 0 4px 12px rgba(20,41,95,.05); margin-bottom: 14px; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; padding: 20px 26px; font-family: 'Quicksand',sans-serif; font-weight: bold; color: #14295f; font-size: 24px; display: flex; justify-content: space-between; align-items: center;\"\u003eShould I take this with Decompression Procedures?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 26px 22px; color: #3d4756; font-size: 22px;\"\u003eMost divers do. Advanced Nitrox and Decompression Procedures are usually taught together, because Advanced Nitrox provides the high-oxygen gases that make accelerated decompression work. Call us and we'll set up the combined program.\u003c\/div\u003e\n\u003ch3 style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; font-family: 'Quicksand',sans-serif; color: #14295f;\"\u003eShould I take this with Decompression Procedures?\u003c\/h3\u003e\n\u003cp style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;\"\u003eMost divers do. Advanced Nitrox and Decompression Procedures are usually taught together, because Advanced Nitrox provides the high-oxygen gases that make accelerated decompression work. Call us and we'll set up the combined program.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background: #fff; border-radius: 12px; box-shadow: 0 4px 12px rgba(20,41,95,.05); margin-bottom: 14px; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; padding: 20px 26px; font-family: 'Quicksand',sans-serif; font-weight: bold; color: #14295f; font-size: 24px; display: flex; justify-content: space-between; align-items: center;\"\u003eWhat are the prerequisites?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 26px 22px; color: #3d4756; font-size: 22px;\"\u003eYou need to be a certified TDI Nitrox diver or equivalent, show proof of 25 logged open water dives, and be at least 15 with parental consent, or 18 without.\u003c\/div\u003e\n\u003ch3 style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; font-family: 'Quicksand',sans-serif; color: #14295f;\"\u003eWhat are the prerequisites?\u003c\/h3\u003e\n\u003cp style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;\"\u003eYou need to be a certified TDI Nitrox diver or equivalent, show proof of 25 logged open water dives, and be at least 15 with parental consent, or 18 without.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background: #fff; border-radius: 12px; box-shadow: 0 4px 12px rgba(20,41,95,.05); margin-bottom: 14px; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; padding: 20px 26px; font-family: 'Quicksand',sans-serif; font-weight: bold; color: #14295f; font-size: 24px; display: flex; justify-content: space-between; align-items: center;\"\u003eDoes this let me do decompression dives?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 26px 22px; color: #3d4756; font-size: 22px;\"\u003eThis certification is for no-decompression dives using high-oxygen mixes. Planned decompression is the focus of the Decompression Procedures course, which is why the two are so often taken together.\u003c\/div\u003e\n\u003ch3 style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; font-family: 'Quicksand',sans-serif; color: #14295f;\"\u003eDoes this let me do decompression dives?\u003c\/h3\u003e\n\u003cp style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;\"\u003eThis certification is for no-decompression dives using high-oxygen mixes. Planned decompression is the focus of the Decompression Procedures course, which is why the two are so often taken together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background: #fff; border-radius: 12px; box-shadow: 0 4px 12px rgba(20,41,95,.05); margin-bottom: 14px; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; padding: 20px 26px; font-family: 'Quicksand',sans-serif; font-weight: bold; color: #14295f; font-size: 24px; display: flex; justify-content: space-between; align-items: center;\"\u003eWhat gear do I need?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 26px 22px; color: #3d4756; font-size: 22px;\"\u003eYour own mask, fins, boots, and snorkel, plus oxygen-compatible cylinders, regulators, and a BCD for the technical portion. Those are available to rent from us, though divers who train on their own equipment are better prepared for everything that follows.\u003c\/div\u003e\n\u003ch3 style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; font-family: 'Quicksand',sans-serif; color: #14295f;\"\u003eWhat gear do I need?\u003c\/h3\u003e\n\u003cp style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;\"\u003eYour own mask, fins, boots, and snorkel, plus oxygen-compatible cylinders, regulators, and a BCD for the technical portion. Those are available to rent from us, though divers who train on their own equipment are better prepared for everything that follows.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background: #fff; border-radius: 12px; box-shadow: 0 4px 12px rgba(20,41,95,.05); margin-bottom: 14px; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; padding: 20px 26px; font-family: 'Quicksand',sans-serif; font-weight: bold; color: #14295f; font-size: 24px; display: flex; justify-content: space-between; align-items: center;\"\u003eIs there a lot of theory?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 0 26px 22px; color: #3d4756; font-size: 22px;\"\u003eYes, and it matters. High-oxygen diving is safe when you understand oxygen exposure, so the course covers CNS and pulmonary oxygen toxicity, oxygen limit tables, and gas planning in real depth.\u003c\/div\u003e\n\u003ch3 style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; font-family: 'Quicksand',sans-serif; color: #14295f;\"\u003eIs there a lot of theory?\u003c\/h3\u003e\n\u003cp style=\"position: absolute; width: 1px; height: 1px; padding: 0; margin: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;\"\u003eYes, and it matters. High-oxygen diving is safe when you understand oxygen exposure, so the course covers CNS and pulmonary oxygen toxicity, oxygen limit tables, and gas planning in real depth.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection style=\"background: #4a90c2; border-radius: 16px; text-align: center; padding: 48px 32px; margin: 46px 0 24px;\"\u003e\n\u003ch2 style=\"font-family: 'Quicksand',sans-serif; color: #14295f; font-size: 46px; margin: 0 0 14px;\"\u003eLet's. Go. Diving.\u003c\/h2\u003e\n\u003cp style=\"color: #fff; font-size: 25px; max-width: 700px; margin: 0 auto 28px;\"\u003eReady to make the jump to technical diving? Call the shop and we'll map out Advanced Nitrox, and whether to pair it with Deco.\u003c\/p\u003e\n\u003ca href=\"tel:+14808814013\" style=\"display: inline-block; background: #e07a5f; color: #12233f; font-family: 'Quicksand',sans-serif; font-weight: bold; font-size: 24px; border-radius: 44px; padding: 18px 42px; text-decoration: none;\"\u003eCall the shop (480) 881-4013\u003c\/a\u003e\u003c\/section\u003e\n\u003cp style=\"text-align: center; color: #5a6675; font-size: 19px; margin: 0;\"\u003eA technical certification for high-oxygen, no-decompression diving from EAN 21 through 100% oxygen to 130 feet. Prerequisites: certified TDI Nitrox diver (or equivalent) and 25 logged dives. Most often taught with Decompression Procedures.\u003c\/p\u003e\n\u003cp style=\"text-align: center; color: #8592a2; font-size: 17px; margin: 22px 0 0; padding-top: 18px; border-top: 1px solid #e4e9ef;\"\u003eBy booking, you agree to our \u003ca href=\"\/policies\/terms-of-service\" style=\"color: #3f7fa6; font-weight: bold; text-decoration: none;\"\u003eTerms \u0026amp; Conditions\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Dive Arizona","offers":[{"title":"Dec 11 to 13, 2026","offer_id":52879184527591,"sku":"CLASS-8d155f6b-bd68-5a2b-a32a-5b3146206839","price":749.0,"currency_code":"USD","in_stock":true},{"title":"Oct 2 to 17, 2027","offer_id":52879184560359,"sku":"CLASS-307d6873-092a-56b5-b41a-83a5e2e63b04","price":749.0,"currency_code":"USD","in_stock":true},{"title":"I will pick a date later","offer_id":52640428032231,"sku":"tdi-advanced-nitrox","price":749.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0807\/4156\/4647\/files\/lg_493019425_1780250917_3545746.jpg?v=1789518294","url":"https:\/\/divearizona.com\/products\/tdi-advanced-nitrox","provider":"Dive Arizona","version":"1.0","type":"link"}