A cylinder volume, a working-pressure figure and an advertised number of minutes answer different questions. Keep them in separate columns when comparing mini scuba tanks. A useful specification sheet identifies the product; it does not replace a trained gas-management assessment.
Record the exact capacity and market version
The T-500 manual identifies a 0.5-litre cylinder and its stated pressure specification. That physical volume should not be read as a breathing duration. The pressure gauge is also not a countdown timer: it indicates pressure, rather than how many safe minutes remain for a particular person and activity.
The T-2000 manual adds a useful purchasing detail: its English introduction lists 1.9 litres for the USA market and 2.0 litres for the EU market. The public listing uses a 2L product description. A buyer should therefore ask which marked cylinder and destination version a quote covers, rather than assuming that a shared family name resolves the capacity.
Ask what the time claim actually describes
- Which exact cylinder and breathing assembly were used?
- What starting pressure, depth and activity were specified?
- Was the figure a manufacturer estimate, a defined test or an undocumented headline?
- What end point and reserve assumptions were used?
If those conditions are absent, do not turn the number into a trip plan. Different activity and breathing demand can change the result. A supplier’s quoted maximum is not a personal promise, and a simple ratio between two cylinder sizes would not establish a safe duration or an adequate emergency supply.
This also explains why small-cylinder objections cannot be answered with a single optimistic time figure. Limited gas is a genuine constraint. The right response is to establish a clearly documented role and have the complete setup assessed within training, rather than presenting the smallest or largest model as universally sufficient.
Make a comparison that survives a quotation
Keep the cylinder’s marked capacity and pressure, the actual model/version, included components and the source document on one comparison row. Place any time claim in a separate row with its conditions and evidence status. Mark an unsupported claim unknown, even when the package is attractive.
For a purchase decision, ask the seller to reconcile a website description, manual and proposed cylinder if they differ. Do that before ordering; neither a generic catalogue photo nor a family-level model name settles the identity of the product that would be supplied.
Ask about an identified configuration
Review the TRIMIX T-2000 listing, then ask for the T-2000 information relevant to your decision. Ask which destination-market cylinder capacity and markings the proposed configuration has. Request the exact documents and any conditions behind a duration claim. The inquiry prepares an email; it is not an order, a sent message or confirmation of availability. No TRIMIX hands-on performance test is claimed here.
Evergreen buyer guide verified November 3, 2026. Source dates: T-500 user manual, English sections 1–7: undated; T-2000 user manual, English sections 1–7: undated. A current download is not evidence of a new launch. Follow the supplied model-specific instructions, qualified training and applicable local requirements; this article is not a dive plan, emergency procedure or filling instruction.
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