Nitrogen 400 — NO₂ 400 ppm Calibration Gas, 34L Aluminum (34L-111-400)
Nitrogen 400 — NO₂ 400 ppm Calibration Gas, 34L Aluminum (34L-111-400)
Nitrogen Dioxide (NO₂) 400 ppm calibration gas, balance nitrogen — NIST-traceable and manufacturer-direct. Spans and calibrates NO₂ / NOx gas detectors and emissions analyzers (diesel exhaust, combustion, stack and environmental monitoring).
- Part number: 34L-111-400
- Concentration: 400 ppm Nitrogen Dioxide (NO₂)
- Balance: Nitrogen (balance air also available — request)
- Cylinder: 34 L aluminum, C-10 connection. Also available in 58 L, 105 L & 116 L.
- Shelf life: 12 months from fill date.
- Certification: NIST-traceable certificate of analysis included.
- Cross-reference: direct equivalent to Gasco and Cal Gas Direct nitrogen dioxide 400 ppm ("nitrogen 400") — same spec, manufacturer-direct pricing.
- Made in the USA · ships in 48 hours.
Looking for nitrogen 400 or 400 ppm nitrogen dioxide gas in a 34 L cylinder? Buy NO₂ 400 ppm span gas direct from the manufacturer.
Nitrogen 400 (NO₂ 400 ppm) — sizes & part numbers
| Cylinder | Part number | Balance |
|---|---|---|
| 34 L aluminum | 34L-111-400 | Nitrogen |
| 58 L aluminum | 58L-111-400 | Nitrogen |
| 105 L aluminum | 105L-111-400 | Nitrogen |
| 116 L aluminum | 116L-111-400 | Nitrogen |
Balance-air versions (part numbers 34L/58L/105L/116L-112-400) are also available. Same NO₂ 400 ppm spec as the Gasco, Cal Gas Direct and Scott “nitrogen 400” cylinders — bought direct from the manufacturer, without the distributor markup.
Applications
- Span and bump testing of NO₂ / NOx gas detectors and monitors
- Vehicle and diesel-exhaust emissions testing
- Combustion and stack-gas analysis
- Ambient air-quality and environmental monitoring
- Industrial hygiene and confined-space safety programs
Frequently asked questions
What is “nitrogen 400” gas? “Nitrogen 400” is the common name for nitrogen dioxide (NO₂) calibration gas at 400 ppm, used to span and calibrate NO₂ / NOx detectors. This is that gas, manufacturer-direct.
Nitrogen or air balance? This cylinder is balance nitrogen. A balance-air version (part number 34L-112-400) is also available if your detector requires it.
What is the shelf life? 12 months from the fill date. Every cylinder ships with a NIST-traceable Certificate of Analysis.
Which detectors is it compatible with? NO₂ / NOx detectors from MSA, Dräger, Honeywell, RAE Systems, BW and Industrial Scientific, using the C-10 cylinder connection and a compatible fixed-flow regulator.
How fast does it ship? Made in the USA and ships in 48 hours from our Florida facility.