Description
Calibration Gas 4 Gas standard blend 66L — 66-L certified calibration gas—standard 4-gas blend for multi-gas monitors.
- Typical composition: 25 ppm H₂S, 100 ppm CO, 2.5% CH₄ (50% LEL), 18.0% O₂, balance N₂
- NIST-traceable mix suitable for calibration & bump testing
- Aluminum cylinder; C-10 valve (check your regulator compatibility)
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