Portagas Calibration Gas Equivalent — Complete Cross-Reference Guide
Portagas is a calibration gas brand of Praxair — now part of Linde plc, the world's largest industrial gas company by market capitalization. If you currently use Portagas calibration gas cylinders and are looking for an ISO 17025:2017 certified independent equivalent with direct purchasing, faster delivery, and no distributor markup, this guide covers everything you need.
|
Trigas USA is an ISO 17025:2017 and ISO 17034:2016 accredited independent specialty gas laboratory. We are not affiliated with Portagas, Praxair, or Linde. Our calibration gas is manufactured to the same concentration specifications as Portagas — with independent laboratory accreditation that Portagas does not hold. |
What Is Portagas?
Portagas is a specialty calibration gas brand developed by Praxair, the US-based industrial gas company. Praxair merged with Linde AG (Germany) in 2018 to form Linde plc — the world's largest industrial gas company with over $33 billion in annual revenue and operations in more than 100 countries.
Today, Portagas cylinders are manufactured and distributed within the Linde/Praxair corporate system. Linde also operates Linde Electronics, Linde Healthcare, and numerous specialty gas divisions globally — making it one of the two dominant forces in the industrial gas oligopoly alongside Air Liquide (which owns Calgaz, Gasco, and Airgas).
Key fact: The entire disposable calibration gas market in the United States is effectively controlled by two corporate groups — Air Liquide (Calgaz, Gasco, Portagas via Airgas) and Linde (Portagas via Praxair). For companies with supply chain independence requirements, Trigas USA is one of the few ISO 17025:2017 accredited independent manufacturers outside this duopoly.
Portagas Part Number System
Portagas uses a part number format starting with '900' followed by digits that identify the gas mixture and cylinder size. Examples include 90094614, 90100367, and 90093940. The number encodes the mixture composition and cylinder volume.
|
Have a Portagas part number but not sure what gas mixture it contains? Email orders@trigasusa.com with your Portagas part number. We will identify the exact mixture, confirm the Trigas USA equivalent, and provide pricing within 2 business hours. |
Portagas Cross-Reference Table — Most Common Part Numbers
Single Gas Mixtures
|
Portagas Part Number |
Gas Mixture |
Concentration |
Cylinder |
Trigas USA Equivalent |
|
90093940 |
Carbon Monoxide / N₂ |
100 ppm CO |
34L |
34L-CO-100 |
|
90093938 |
Carbon Monoxide / N₂ |
100 ppm CO |
17L |
17L-CO-100 |
|
90094614 |
Nitrogen Dioxide / N₂ |
5 ppm NO₂ |
34L |
34L-NO2-5 |
|
90100367 |
Methane / Air |
2.5% CH₄ (50% LEL) |
103L |
103L-CH4-50LEL |
|
90094320 |
Hydrogen Sulfide / N₂ |
25 ppm H₂S |
34L |
34L-H2S-25 |
|
90094318 |
Hydrogen Sulfide / N₂ |
25 ppm H₂S |
17L |
17L-H2S-25 |
|
90094410 |
Oxygen / N₂ |
18% O₂ |
34L |
34L-O2-18 |
|
90094408 |
Oxygen / N₂ |
18% O₂ |
17L |
17L-O2-18 |
|
90094880 |
Sulfur Dioxide / N₂ |
20 ppm SO₂ |
34L |
34L-SO2-20 |
|
90094750 |
Ammonia / Air |
25 ppm NH₃ |
34L |
34L-NH3-25 |
|
90094200 |
Chlorine / N₂ |
10 ppm Cl₂ |
34L |
34L-CL2-10 |
|
90094100 |
Hydrogen Cyanide / N₂ |
10 ppm HCN |
34L |
34L-HCN-10 |
Four-Gas Mixtures — Quad Gas
|
Portagas Part Number |
Gas Mixture |
Cylinder |
Trigas USA Equivalent |
|
90100400 |
25 ppm H₂S / 100 ppm CO / 50% LEL CH₄ / 18% O₂ |
34L |
34L-380 |
|
90100398 |
25 ppm H₂S / 100 ppm CO / 50% LEL CH₄ / 18% O₂ |
17L |
17L-380 |
|
90100402 |
25 ppm H₂S / 100 ppm CO / 50% LEL CH₄ / 18% O₂ |
58L |
58L-380 |
|
90100404 |
25 ppm H₂S / 100 ppm CO / 50% LEL CH₄ / 18% O₂ |
103L |
103L-380 |
|
90100420 |
10 ppm H₂S / 50 ppm CO / 50% LEL CH₄ / 18% O₂ |
34L |
34L-486 |
|
90100421 |
25 ppm H₂S / 100 ppm CO / 1.45% CH₄ / 15% O₂ / N₂ |
34L |
34L-421 |
|
90100580 |
25 ppm H₂S / 100 ppm CO / 1.45% CH₄ / 15% O₂ / N₂ |
58L |
58L-421 |
|
90100491 |
50 ppm CO / 25 ppm H₂S / 0.7% Pentane / 18% O₂ / N₂ |
34L |
34L-491 |
Portagas vs. Trigas USA — Direct Comparison
|
Feature |
Portagas (Linde/Praxair) |
Trigas USA |
|
ISO 17025:2017 Lab Accreditation |
No |
Yes (L25-1002) |
|
ISO 17034:2016 RM Producer |
No |
Yes (L25-1003) |
|
EPA PGVP Certified |
No |
Yes (#29) |
|
NIST-Traceable CoA |
Yes |
Yes — from accredited lab |
|
Corporate Owner |
Linde plc (Germany) |
Independent — WSM Supplier LLC |
|
Related Brands |
Linde, Praxair |
No affiliations |
|
Sales Channel |
Linde/Praxair distributors |
Direct to end user |
|
Same-Day Shipping |
Depends on distributor |
Yes — before 2 PM EST |
|
Auto-Replenish |
No |
Yes — 8% discount |
|
Net-30 B2B Terms |
Via Praxair account |
Direct from Trigas USA |
Which Detectors Use Portagas Calibration Gas?
Portagas calibration gas is used with the same portable gas detector platforms as all other disposable calibration gas brands. The calibration gas specification is determined by the detector manufacturer — not the gas brand. Trigas USA equivalents work with all of the following:
|
Detector Brand |
Common Models |
Trigas USA Compatible |
|
MSA Safety |
Altair 4X, Altair 5X, Altair Pro |
Yes — same concentration |
|
BW Technologies (Honeywell) |
GasAlert Quattro, Micro Clip XL |
Yes — same concentration |
|
Industrial Scientific |
MX6 iBrid, Ventis MX4, Tango TX1 |
Yes — same concentration |
|
Honeywell Analytics |
BW Clip, MultiPro, Gas Pro |
Yes — same concentration |
|
RKI Instruments |
GX-3R, GX-6000, Eagle 2 |
Yes — same concentration |
|
Draeger |
X-am 5000, X-am 2500, X-am 8000 |
Yes — same concentration |
|
RAE Systems |
MultiRAE, MiniRAE 3000 |
Yes — same concentration |
|
Crowcon |
Clip, T4, Gasman |
Yes — same concentration |
|
GMI |
PS200, PS500 |
Yes — same concentration |
Shipping and Availability
Trigas USA ships disposable calibration gas cylinders from Miami, FL via UPS Ground HazMat certified service. All Portagas equivalents are stocked for same-day shipping on orders placed before 2:00 PM EST Monday through Friday.
|
Destination Region |
Typical Transit Time |
States Included |
|
Southeast USA |
1-2 business days |
FL, GA, SC, NC, VA, AL, TN, MS |
|
Mid-Atlantic / Northeast |
2-3 business days |
NY, NJ, PA, MD, CT, MA, DC |
|
Midwest |
3-4 business days |
OH, IN, IL, MI, WI, MN, MO |
|
South Central |
2-3 business days |
TX, LA, AR, OK |
|
Mountain / West |
4-5 business days |
CO, AZ, NV, UT, NM, WA, OR, CA |
|
Portagas cylinders are classified as Division 2.3 (toxic) or Division 2.2 (non-flammable compressed gas) under DOT 49 CFR. Trigas USA is certified for HazMat ground shipping. Air shipment is not available for pressurized gas cylinders. |
Frequently Asked Questions — Portagas Equivalent
Is Trigas USA an authorized Portagas or Praxair distributor?
No. Trigas USA is an independent ISO 17025:2017 accredited gas manufacturer — not affiliated with Portagas, Praxair, or Linde. We manufacture our own calibration gas mixtures with identical concentration specifications and independent laboratory accreditation.
My safety data sheet references Portagas — can I use a different brand?
Yes. Your Safety Data Sheet (SDS) is specific to the gas mixture composition — not the brand. Trigas USA provides SDS documentation for all our calibration gas mixtures. Your regulatory compliance is based on the gas concentration and NIST traceability, not the manufacturer name. Simply update your approved supplier list to include Trigas USA.
Does switching from Portagas affect my instrument calibration records?
No. Calibration records document the gas concentration, lot number, CoA reference, and date of calibration — not the gas brand. Trigas USA CoAs include all required information for OSHA, EPA, and ISO 17025 audit documentation. Your historical Portagas records remain valid as-is.
Can I order Trigas USA gas on a purchase order with Net-30 terms?
Yes. Apply for a Trigas USA B2B account at trigasusa.com/b2b. Approval within 1 business day for qualified companies. Net-30 payment terms available with purchase order. Dedicated account manager for safety coordinators and EHS professionals.
|
Ready to order Portagas equivalents? Find your part number in the tables above and order at trigasusa.com/shop — or email orders@trigasusa.com with your Portagas part numbers. ISO 17025 certified, same-day shipping from Miami, FL. Call (305) 455-1222 for immediate assistance. |
Related Resources
• Gasco Calibration Gas Equivalent — cross-reference for Gasco (Air Liquide/Airgas)
• Calgaz Calibration Gas Equivalent — cross-reference for Calgaz (Air Liquide)
• 4-Gas Calibration Cylinder Guide — CO / H₂S / O₂ / LEL quad gas complete guide
• ISO 17025 Calibration Gas — why independent accreditation matters
• Bump Test Gas Auto-Replenish — automatic delivery with 8% discount
• EPA Protocol Gas — PGVP certification explained for CEMS programs
ISO/IEC 17025:2017 (L25-1002) · ISO 17034:2016 (L25-1003) · EPA PGVP #29 · PJLA Accreditation #125017 (valid through March 31, 2028)