Photo by U.S. Navy — Navy Diver 2nd Class Brian Williams · Public domain (work of the U.S. federal government)
Advanced Gas Blender
Non-diving support certification for technical staff preparing complex gas blends. Teaches advanced gas chemistry, partial-pressure and continuous blending techniques, oxygen and helium handling, and safety protocols for high-pressure gas preparation. Prerequisite course for anyone operating blending equipment at dive facilities or providing technical diving gas support.
Centres that teach this course
6 dive centres in the directory publish a price for this exact certification, checked Sep 2026. Each centre's own wording is shown beneath its name. Ranges cover whole-course prices only — where a centre charges per day or per dive, its rate is listed separately below, since a daily figure is not comparable with a course total.
- €250total
- €250total
- €200total
- €195total
- €230total
- IDR 5,500,000total
Same training under a different agency
4 centres
A separate set of centres, teaching Trimix Gas Blender under a different agency. These are not the same certification — the standards and the card differ — but they cover the same depth and scope, which is why centres price them alike. Every row here names whose rating it is, and none of them is counted above.
- €195total
- €180total
Charged by the day or dive rather than as a course price:
- $200per day
- ₱24,000total
Same tier, agency not stated
4 centres
These centres publish a price for Trimix Gas Blender, but their own wording does not say which agency's certification it buys — many teach several and name the card only once you enquire, and some price one course for either agency. The figure is comparable; the certification is not identified, so we do not guess at one.
- €250total
- €180total
- THB 13,000total
- $300total
These prices are not like-for-like. Two centres can charge very differently for the same certification because they include different things. One price may cover twinsets, stages, deco gas and cylinder rental for every training dive, a dedicated classroom for the theory, boat or transport to the site, and the agency's registration and materials; another may be tuition only, with all of that charged separately — or the other way round, with a centre bundling in extras the first leaves out. Class size, whether the course is one-to-one, and how many days are allowed for it move the figure too. Check what each centre's price includes before comparing them, and confirm with the centre before booking.
Consumables are usually extra. Sorb, helium, O₂ and other fills, park and cenote fees, certification fees and rental are commonly charged on top.
Packages combining several certifications, upgrades from an existing one, and open-ended day rates are excluded — none of them is the standalone price of this course, and including them would move the figures away from what a new student can actually book.
Prerequisites
TDI Nitrox Gas Blender or equivalent; Minimum age 18
Standards
What a diver must demonstrate to pass this course — not always published by the certifying agency.
Land drills: gas analysis procedures, MOD calculations, equipment checks, blend verification, safety documentation. Competency demonstration in: oxygen partial pressure calculations, mixture analysis, safe gas handling protocols, equipment maintenance
Instructors Teaching This Course
Thailand
Dive Centres Offering This Course
Thailand
We're still building out the directory country by country, so this list isn't every instructor or dive centre teaching it in the world — more locations are coming soon.
Common questions about TDI Advanced Gas Blender
How much does TDI Advanced Gas Blender cost?
Published prices for TDI Advanced Gas Blender range across 6 centres in the TecDiveTools directory — roughly US$210 to US$310 at current exchange rates. In each centre's own currency: €195–€250 (5 centres) and IDR 5,500,000 (1 centre). Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
How long does TDI Advanced Gas Blender take?
Between 1 and 2 days, based on the durations 4 centres publish for it. The time depends on the centre's schedule, weather, and how quickly the required skills are demonstrated — agencies set a minimum number of dives, not a fixed number of days.
What are the prerequisites for TDI Advanced Gas Blender?
TDI's standards require: TDI Nitrox Gas Blender or equivalent; Minimum age 18.
What is the minimum age for TDI Advanced Gas Blender?
TDI's standards state: Minimum age 18.
What does TDI Advanced Gas Blender training involve?
According to TDI's published standards: Land drills: gas analysis procedures, MOD calculations, equipment checks, blend verification, safety documentation. Competency demonstration in: oxygen partial pressure calculations, mixture analysis, safe gas handling protocols, equipment maintenance.
What is the equivalent of TDI Advanced Gas Blender in other agencies?
At the same tier in TecDiveTools' cross-agency comparison: PADI TecRec Tec Trimix Gas Blender, RAID Trimix Gas Blender and IANTD Trimix Gas Blender. They cover comparable training, but each agency sets its own standards, depth limits and certification card, so they are comparable rather than interchangeable — check which one your next course accepts.
Where can I take TDI Advanced Gas Blender?
1 dive centre and 1 instructor in the TecDiveTools directory teach TDI Advanced Gas Blender, in Thailand. Each is listed further up this page.
Does the price of TDI Advanced Gas Blender include gas and equipment?
Not always — it varies by centre. Helium, certification fees, equipment rental and boat or site fees are commonly charged on top of the course price. Each centre's price list on TecDiveTools shows what it notes as included.