Dive services
Nitrox Fills in Australia
Standard mixes, custom blending, and why a simple yes or no is not enough information.
Nitrox contains a higher oxygen fraction than normal air, and a proper fill directory needs more information than a simple yes or no field.
The practical questions are which mixes are available, whether custom blending is offered, what the fill method is, whether oxygen-clean cylinders are required, and whether an analyser is available for divers to use.
A centre that offers EAN32 from a membrane system is providing something different from one that partial-pressure blends custom mixes to order.
Membrane systems produce a limited range of mixes but do not require oxygen-clean cylinders for standard recreational percentages. Partial-pressure blending allows any mix but involves handling pure oxygen and generally requires oxygen-clean cylinders.
This determines both what you can get and whether your own cylinder is suitable.
Divers should analyse their own cylinder before use and record the result, regardless of what the fill sheet says.
A mix labelled 32 percent that is actually 40 percent changes your maximum operating depth significantly. The analysis is the diver's responsibility, and every properly run facility expects you to do it.
Nitrox delivers most value on repetitive multi-dive days — liveaboards, wreck trips and dive holidays where you are doing three or four dives daily.
It is available on most Great Barrier Reef liveaboards and at the majority of metropolitan Australian dive centres, though regional availability varies.
What a complete listing records
A simple yes or no tells a diver very little. These are the fields that actually distinguish one provider from another.
- standard mixes offered
- custom mixes
- fill method — membrane, partial pressure or premix
- oxygen-clean cylinder requirements
- analyser available for divers
- maximum advertised mix
- pricing
- date last verified
47 businesses across 8 states and territories have this capability recorded as verified or advertised. Always confirm current availability and turnaround directly.
Queensland
- Pro Dive CairnsA PADI 5 Star Career Development Centre operating since 1983, pairing a Cairns training centre with two deep heated pools with three-day outer reef liveaboard trips.
- Divers DenCairns' longest-established dive company (founded 1974), a PADI Career Development Centre and Eco Centre running day trips and the OceanQuest reef-based liveaboard.
- Mike Ball Dive ExpeditionsA Cairns liveaboard operator running the Spoilsport on three- to seven-night expeditions to the Cod Hole, Ribbon Reefs and Osprey Reef in the Coral Sea.
- Spirit of FreedomA Cairns liveaboard running three-, four- and seven-night trips to the Cod Hole, Ribbon Reefs and Osprey Reef, with 11 ensuite cabins.
- Yongala DiveAn Ayr-based operation specialising in the SS Yongala, with a shorter boat transit to the wreck than Townsville departures.
- Adrenalin Snorkel & DiveTownsville's longest-established dive day-trip operator, a PADI 5 Star centre running the SS Yongala wreck, John Brewer Reef and the Museum of Underwater Art.
- Lady Elliot Island Eco ResortAn eco-resort on a no-take coral cay reached only by air, with beach and boat diving and a resident manta ray population of about 40.
- Sunreef MooloolabaThe Sunshine Coast's only PADI 5 Star IDC, with roots to 1976 and three dive vessels running the ex-HMAS Brisbane, Flinders Reef and humpback whale swims.
- Scuba World MooloolabaA Mooloolaba SSI Instructor Training Center with air, Nitrox and oxygen, Extended Range and rebreather programmes, and boat trips to up to 15 local reef sites.
- Wolf Rock Dive CentreA Rainbow Beach operation specialising in Wolf Rock, an advanced offshore pinnacle site known for grey nurse sharks.
- Go Dive BrisbaneA Windsor dive centre founded in 2000, operating as a PADI Instructor Development Centre and TecRec Centre with a large Scubapro and TUSA showroom.
- Dive Dive DiveA long-standing Brisbane business associated with technical training alongside recreational courses, retail and servicing. Technical capability should be audited service by service rather than assumed.
New South Wales
- Sundive Byron BayByron Bay's PADI 5 Star dive centre, running three daily departures to Nguthungulli Julian Rocks with training from Try Scuba to Divemaster.
- South West Rocks Dive CentreA family-run South West Rocks operation that has run daily charters to Fish Rock since 1980, including the 125-metre cave traverse.
- Fish Rock Dive CentreA South West Rocks operation running regular Fish Rock and Fish Rock Cave trips from a 12-metre purpose-built vessel, with Nitrox supplied and PADI training.
- Jetty Dive CentreCoffs Harbour's PADI 5 Star Instructor Development Centre, running the Solitary Islands dive fleet from the Jetty Strip with training, retail, Nitrox and whale swims.
- Scuba Haven Port MacquarieA Port Macquarie SSI centre offering air and Nitrox, equipment servicing, and boat, shore and river dives around Port Macquarie and Laurieton.
- Feet First DiveA Nelson Bay SSI centre running Broughton Island boat dives and Port Stephens shore dives, with rebreather and Extended Range training.
- Grey Nurse ChartersA PADI-registered dive boat running charters around Port Stephens, Newcastle and Swansea, with PADI courses to Divemaster and TecRec.
- Dive Centre ManlyA Northern Beaches operation with a long-standing presence at Shelly Beach, offering recreational training, boat diving and technical pathways.
- Frog Dive SydneyA Willoughby PADI 5 Star IDC founded in 1985, teaching recreational through Trimix and rebreather courses with PADI, SDI and TDI, and testing cylinders in-store.
- Abyss Scuba DivingA Sydney operation associated with training across recreational and technical levels, boat diving and equipment services.
- Dive Centre BondiAn Eastern Suburbs PADI 5 Star IDC on Bondi Road teaching through Instructor and technical levels, with air, Nitrox and Trimix fills and manufacturer-approved servicing.
- Geo DiversA Sydney PADI 5 Star Instructor Development Centre running small-group courses with two PADI professionals, from Discover Scuba through Instructor training.
- Pro Dive BrookvalePro Dive's Northern Beaches centre at Brookvale, running the 43-foot dive boat Sea Life V alongside courses, hire, air fills and servicing.
- Merimbula Divers LodgeAn SSI dive centre with its own accommodation, classroom, shop, air and Nitrox and a purpose-built boat, running small classes on the far south coast.
- Sydney Dive SafariAn SSI Career Development Centre five minutes from Bare Island, with two full-time Instructor Trainers, air and Nitrox, servicing and a large showroom.
Victoria
- Academy of ScubaA PADI 5 Star IDC that now describes itself as the only dive centre based on Western Port Bay, diving Flinders' seadragon habitat and Port Phillip's piers and reefs.
- Aquatic AdventuresA Rowville dive centre operating since 2000, a PADI 5 Star IDC and SSI Instructor Training Center with TecRec training and the Aquaholics dive club.
- The Scuba DoctorA Victorian equipment and service business with an extensive retail presence, located to serve both Melbourne and Mornington Peninsula divers.
- Diveline Scuba CentreA Frankston PADI 5 Star IDC teaching since the early 1970s, with IANTD technical and cave training, a marine biologist on staff, and in-house cylinder testing.
- Bay City ScubaAn East Geelong dive centre offering snorkelling, scuba and technical diving, all-brand servicing, and boat dives from Queenscliff Harbour to Port Phillip Heads.
- Ocean DiversA Victorian operation associated with recreational and technical training and access to Port Phillip diving.
- Australian Diving InstructionA Geelong PADI 5 Star IDC serving Geelong and Melbourne's west, with air, Nitrox and Trimix, ScubaPro servicing, guided boat and shore dives, and accredited first aid training.
Western Australia
- Perth ScubaOne of the most fully documented operations in Western Australia, covering recreational, professional, technical and freediving training alongside substantial equipment facilities.
- Exmouth Dive & Whalesharks NingalooExmouth's original dive centre and Ningaloo's only PADI 5 Star IDC, running whale shark and humpback swims, reef diving and Navy Pier trips from three boats.
- Dive NingalooAn Exmouth operation focused on certified scuba diving, including Navy Pier access.
- Extra Divers Christmas IslandChristmas Island's locally operated dive centre in Settlement, with a 16-diver boat at Flying Fish Cove, shore and night dives, courses and diver accommodation.
South Australia
- Adelaide ScubaA Glenelg North PADI 5 Star centre with a heated indoor pool, in-house servicing and three dive boats moored behind the shop, running midweek and weekend charters.
- Diving AdelaideAn Adelaide training and guided diving operation serving local sites and organised trips.
- Dive ExperienceA Mount Gambier business serving the region's cave and sinkhole diving community, including equipment and gas support.
Tasmania
- Go Dive TasmaniaHobart's only PADI 5 Star dive centre, operating since 2003, with a city store and The Adventure Lodge divers' accommodation at Eaglehawk Neck.
- Eaglehawk Dive CentreThe principal operation at Eaglehawk Neck, servicing the Tasman Peninsula's sea caves, walls and deeper wrecks.
- Tasmania Tech and Dive CentreThe Tasmanian operation most clearly associated with technical diving services, spanning recreational and technical training with technical gas support.
Australian Capital Territory
- Indepth ScubaA Canberra operation that functions as both a training school and a life-support service facility, with cylinder testing and a full range of gas fills.
- Lady of the Sea Diving AcademyA Canberra operation with an unusually complete set of facilities for an inland centre, including an onsite pool, classroom, retail shop and dive boat.
Services Related to Nitrox Fills
Nitrox Fills FAQs
Do I need my own cylinder oxygen cleaned for Nitrox?
It depends on the fill method. Membrane-blended recreational mixes often do not require it; partial-pressure blending generally does. Ask the facility.
What mixes are usually available?
EAN32 and EAN36 are the common standards. Custom mixes depend on the facility's blending capability.
Is Nitrox more expensive?
Usually somewhat more than air, varying by facility and mix. On a multi-dive day the extended no-decompression time often justifies it.