Portagas Calibration Gas Equivalent — Complete Cross-Reference Guide
If you use Portagas calibration gas cylinders and want the Trigas USA equivalent — direct, certified, and shipped fast — this guide maps the most common Portagas 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 Portagas. “Portagas” is referenced only to help you identify the equivalent product.
How to read a Portagas part number
Portagas part numbers begin with 900 followed by digits that identify the mixture and cylinder size — for example, 90094614 or 90100367. The number is printed on the cylinder label.
Single-gas mixtures
| Portagas part # | Gas | Concentration | Size | Trigas USA equivalent |
|---|---|---|---|---|
| 90093940 | Carbon Monoxide / N₂ | 100 ppm | 34L | 34L-CO-100 |
| 90094320 | Hydrogen Sulfide / N₂ | 25 ppm | 34L | 34L-H2S-25 |
| 90094410 | Oxygen / N₂ | 18% | 34L | 34L-O2-18 |
| 90100367 | Methane / Air | 2.5% CH₄ (50% LEL) | 103L | 103L-CH4-50LEL |
| 90094614 | Nitrogen Dioxide / N₂ | 5 ppm | 34L | 34L-NO2-5 |
| 90094880 | Sulfur Dioxide / N₂ | 20 ppm | 34L | 34L-SO2-20 |
| 90094750 | Ammonia / Air | 25 ppm | 34L | 34L-NH3-25 |
| 90094200 | Chlorine / N₂ | 10 ppm | 34L | 34L-CL2-10 |
| 90094100 | Hydrogen Cyanide / N₂ | 10 ppm | 34L | 34L-HCN-10 |
Four-gas (quad) mixtures
| Portagas part # | Mixture | Size | Trigas USA equivalent |
|---|---|---|---|
| 90100400 | 25ppm H₂S / 100ppm CO / 50% LEL CH₄ / 18% O₂ | 34L | 34L-380 |
| 90100402 | 25ppm H₂S / 100ppm CO / 50% LEL CH₄ / 18% O₂ | 58L | 58L-380 |
| 90100404 | 25ppm H₂S / 100ppm CO / 50% LEL CH₄ / 18% O₂ | 103L | 103L-380 |
| 90100421 | 25ppm H₂S / 100ppm CO / 1.45% CH₄ / 15% O₂ / N₂ | 34L | 34L-421 |
| 90100580 | 25ppm H₂S / 100ppm CO / 1.45% CH₄ / 15% O₂ / N₂ | 58L | 58L-421 |
Compatible detectors
The calibration gas specification is set by the detector manufacturer, not the gas brand. Trigas USA equivalents work with MSA (Altair 4X/5X/Pro), BW Technologies / Honeywell (GasAlert Quattro, Micro Clip XL, BW Clip, Gas Pro), Industrial Scientific (MX6, Ventis MX4, Tango TX1), RKI (GX-3R, GX-6000, Eagle 2), Draeger (X-am 5000/2500/8000), RAE Systems (MultiRAE, MiniRAE 3000), Crowcon (Clip, T4, Gasman), and GMI (PS200, PS500).
Shipping and availability
All Portagas equivalents are stocked for same-day shipping on orders placed before 2:00 PM EST, via UPS Ground HazMat-certified service. Most of the continental US receives orders in 1–5 business days. Air shipment is not available for pressurized cylinders.
FAQ
My SDS references Portagas — can I use a different brand? Yes. An SDS is specific to the gas mixture composition, not the brand. Trigas USA provides SDS documentation for every mixture; compliance is based on concentration and NIST traceability.
Does switching affect my calibration records? No. Records document concentration, lot number, CoA reference, and date — not the brand. Your historical records remain valid.
Net-30 terms? Yes — B2B accounts with purchase orders available.
How to order or match a part number
Don’t see your Portagas 900-series 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.