Every MEYER cylinder family is designed and tested to a named standard, and carries the marking that standard provides for. This page is the single reference for what those standards and markings mean, what testing stands behind them, what is a certified rating versus an engineering configuration, and what documentation is delivered. Jump from any part number in the catalog — the qualification entry on each row links here.
| Family | Design & test standard | Marking / conformity | Notes |
|---|---|---|---|
| HydrogenHDRX-…-H2 | EN ISO 12245:2022 | CE | Sealed liner — no measurable permeation, verified by helium leak detection. Pre-orders open on HDRX-068-H2 and HDRX-400-H2. |
| HeliumHDRX-…-HE | EN 12245:2022 (He service) | π (TPED) / CE | Same sealed-liner construction — no measurable permeation, verified by helium leak detection. |
| Air / nitrogenDRX-… | EN 12245 · TPED · ISO 11119-3 · EN 17339 (per SKU) | π / CE per SKU | Breathing-air, nitrogen and industrial-gas service; the catalog row states the standard for each part number. |
| STANAG configurations…-A2 / EOD | Base standard + STANAG 2897 (AEODP-7) Class A configuration | π / CE per base SKU | Non-magnetic configurations for EOD/MCM diving. See the STANAG 2897 Class A article for tender language. |
| CNGDRX-…-CNG | ISO 11439 / ECE R110 | Per vehicle-approval regime | Automotive natural-gas service. |
| Fire-service (EAC)DRX-6.8 / 9.0 | GOST R 53258 | EAC-market conformity | Breathing-apparatus cylinders for EAC markets. |
| Made-to-speccustom | Manufacturer specification | Per project | Qualification to your programme’s standard, agreed at architecture review — see development. |
| RegulatorsHDRX-R350…R500 | — | — | Configuration quotations open — qualification units planned 2027 Q2. Two-stage, SS 316; every unit is set and verified to its ordered outlet pressure (±0.1 bar standard) and flow before shipment. |
The catalog row for each part number is authoritative — where a family spans several standards, the row states which applies to that SKU.
The European standard for transportable fully wrapped composite gas cylinders. Type approval covers design verification, burst testing, ambient pressure cycling and environmental exposure per the standard’s schedule. The 2022 edition is applied to the hydrogen family, and to the helium family in dedicated He service.
The European standard specific to fully wrapped carbon-composite cylinders and tubes for hydrogen service. Where a catalog row cites EN 17339, the cylinder’s type approval follows that standard’s hydrogen-specific test schedule.
The international standard for composite cylinders with non-load-sharing (polymer) liners — the Type IV construction class. It defines the burst-ratio, cycling and environmental test programme for the design; several catalog SKUs are designed to it directly.
The EU Transportable Pressure Equipment Directive (2010/35/EU). The π mark on a cylinder means its conformity was assessed by a notified body and it may be filled and transported as dangerous goods across the EU under ADR. A standard defines the testing; π is the legal conformity marking on top of it.
The NATO standardization agreement governing equipment for EOD/MCM diving. Class A is its most stringent magnetic-signature class. MEYER composite cylinders are non-magnetic by construction — polymer liner, carbon overwrap — and the catalog marks the configurations built for Class A programmes. Procurement wording and background: STANAG 2897 Class A explained.
The standard pair for on-vehicle CNG storage: ISO 11439 defines the cylinder design and testing, UN ECE Regulation 110 its approval for road vehicles. The CNG family in the catalog is designed to this pair.
The GOST standard for composite cylinders in fire-service breathing apparatus. Two catalog SKUs carry this qualification for EAC-market programmes.
Catalog entries marked “manufacturer specification” are built and tested to MEYER’s internal specification, with formal qualification to a customer or programme standard agreed per project — the usual route for space and defence programmes with their own qualification regimes.
Burst. Catalog working pressures are rated at a burst ratio of 3 — the design burst pressure is three times the working pressure, which is why the catalog’s R&D safety-factor view derives alternative working pressures from a fixed burst.
Cycling. Type approval includes ambient pressure cycling per the applicable standard. MEYER Type IV cylinders are designed for thousands of fill cycles; catalog rows state service life per SKU, including no-life-limit (NLL) designs.
Permeation. The MEYER sealed liner closes the permeation path that standard polymer liners have: no measurable permeation, verified by helium leak detection. That verification is what makes the helium family viable — and it is inherited by the hydrogen family, which shares the construction.
The catalog’s stated working pressure at safety factor 3.0 is the certified rating. The R&D view (SF 2.5 / 2.25 / 2.0) derives working pressures from the same fixed burst pressure — those figures, and the -SF-suffixed part numbers they generate (e.g. HDRX-400-HE-SF2.5), are engineering reference for research and development programmes, not certified ratings. Quotes against -SF part numbers are handled as R&D configurations.
Deliveries include the conformity documentation appropriate to the marking on the cylinder. Test and traceability documentation for qualified programmes — and questions about a specific approval scope — are handled directly: contact us or write to info@meyer.cd with the part number and your programme’s requirements.
Is a π-marked cylinder the same as a CE-marked one? No. CE relates to EU product directives; π is the TPED marking that specifically covers transportable pressure equipment and ADR transport. The matrix above states which marking each family carries.
Can I operate a cylinder at the SF 2.5 working pressure? The derived figure is engineering reference for R&D programmes that own their qualification. The certified rating remains the SF 3.0 catalog value.
Are the STANAG configurations a separate product? They are configurations of catalog cylinders built for STANAG 2897 (AEODP-7) Class A programmes — non-magnetic by construction, selected and configured for EOD/MCM diving procurement.
Can you qualify to our programme standard? Yes — that is the made-to-spec route: qualification scope is agreed at the architecture review and run as part of a development programme.