Calgaz Calibration Gas Equivalent — Complete Cross-Reference Guide
If you use Calgaz calibration gas for your portable gas detectors and want the Trigas USA equivalent — direct, certified, and shipped fast — this guide maps the most common Calgaz part numbers to ours. The gas we supply is produced by laboratories accredited to ISO/IEC 17025:2017 and ISO 17034:2016, and every cylinder ships with a NIST-traceable Certificate of Analysis.
Trigas USA is independent and not affiliated with Calgaz. “Calgaz” is referenced only to help you identify the equivalent product.
How to read a Calgaz part number
Calgaz disposable cylinders use a code that begins with 7E, followed by a size code and a mixture code — for example, 7E370194 is a 34L cylinder, mixture 194. The 7E code is printed on the cylinder label.
Single-gas mixtures
| Calgaz part # | Gas | Concentration | Size | Trigas USA equivalent |
|---|---|---|---|---|
| 7E370194 | Carbon Monoxide / N₂ | 100 ppm | 34L | 34L-CO-100 |
| 7E370295 | Hydrogen Sulfide / N₂ | 25 ppm | 34L | 34L-H2S-25 |
| 7E370410 | Oxygen / N₂ | 18% | 34L | 34L-O2-18 |
| 7E370350 | Methane / Air | 50% LEL (2.5% CH₄) | 34L | 34L-CH4-50LEL |
| 7E370400 | Nitrogen Dioxide / N₂ | 400 ppm | 34L | 34L-NO2-400 |
| 7E370020 | Sulfur Dioxide / N₂ | 20 ppm | 34L | 34L-SO2-20 |
| 7E370025 | Ammonia / Air | 25 ppm | 34L | 34L-NH3-25 |
| 7E370010 | Chlorine / N₂ | 10 ppm | 34L | 34L-CL2-10 |
17L and 103L versions follow the same pattern (7E170… and 7E103…).
Four-gas (quad) mixtures
| Calgaz part # | Mixture | Size | Trigas USA equivalent |
|---|---|---|---|
| 7E370380 | 25ppm H₂S / 100ppm CO / 50% LEL CH₄ / 18% O₂ | 34L | 34L-380 |
| 7E580380 | 25ppm H₂S / 100ppm CO / 50% LEL CH₄ / 18% O₂ | 58L | 58L-380 |
| 7E103380 | 25ppm H₂S / 100ppm CO / 50% LEL CH₄ / 18% O₂ | 103L | 103L-380 |
| 7E370383 | 25ppm H₂S / 100ppm CO / 2.5% CH₄ / 18% O₂ / N₂ | 34L | 34L-383 |
| 7E370421 | 25ppm H₂S / 100ppm CO / 1.45% CH₄ / 15% O₂ / N₂ | 34L | 34L-421 |
| 7E580421 | 25ppm H₂S / 100ppm CO / 1.45% CH₄ / 15% O₂ / N₂ | 58L | 58L-421 |
The 58L-421 is a common quad cylinder for MSA Altair 4X and BW GasAlert Quattro detectors — stocked for fast shipping with a CoA included.
Will it work with my existing regulator?
Yes. Trigas USA disposable cylinders use the same CGA 600 valve connection as Calgaz cylinders, so your existing regulator is compatible with no modifications.
What certifications does my calibration gas need?
OSHA general industry (29 CFR 1910): requires gas certified to the stated concentration, documented with a NIST-traceable Certificate of Analysis.
EPA CEMS / Part 75: requires Protocol Gas from an EPA PGVP-certified producer. The gas we supply is produced by PGVP-certified manufacturers.
Pharmaceutical / FDA 21 CFR: typically requires gas produced in an ISO/IEC 17025:2017 accredited laboratory for GMP compliance — which is how the gas we supply is produced.
ISO 9001 vs ISO 17025: ISO 9001 is a quality-management standard (documented processes). ISO 17025:2017 is a laboratory-competence standard (independently verified, technically valid, traceable measurement). For calibration gas — a reference material — ISO 17025 is the technically correct standard.
How to order or match a part number
Don’t see your Calgaz 7E part number? Email it to sales@trigas-usa.com and we’ll confirm the equivalent. Order at trigas-usa.com or call (786) 609-3221. Auto-Replenish available with 8% off; no minimum order.
FAQ
Can I mix Calgaz and Trigas USA cylinders? Yes — there is no requirement to use a single supplier; your records document lot number, concentration, and CoA reference per calibration event.
Does Trigas USA sell Calgaz products? No — we supply independent equivalents, not Calgaz products.