Description
Calibration Gas 4 Gas standard blend 120L — 120-L certified calibration gas—standard 4-gas blend for multi-gas instruments.
- Typical composition: 25 ppm H₂S, 100 ppm CO, 2.5% CH₄ (50% LEL), 18.0% O₂, balance N₂
- NIST-traceable; larger 120-L cylinder for more calibrations per bottle
- C-10 valve; use with an appropriate fixed-flow or demand regulator
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