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NIST-Traceable Hydrogen Sulfide (H2S) Calibration Gas: Precision primary reference standards for bump testing and calibrating personal gas monitors, fixed facility gas detection grids, and wastewater/refinery safety systems. Formulated in passivated aluminum cylinders to prevent reactive gas degradation.
Hydrogen Sulfide is prevalent in petroleum refining, drilling, biogas, sewer infrastructure, and pulp processing. Regular bump testing and calibration ensure electrochemical sensor accuracy against OSHA permissible exposure limits (PEL) and ACGIH threshold values.
Because H2S is highly reactive and readily adsorbs to unpassivated metals, all mixtures are packaged exclusively in chemically treated aluminum cylinders (34L, 58L, 74L, 116L). Note: Reactive gases require stainless steel regulators (such as the 70-SS series) and PTFE tubing to prevent surface absorption and gas concentration dropoff during calibration.
| Analyte Concentration | Primary Application & Regulatory Target | Recommended Balance Gas | OEM Instrument Compatibility |
|---|---|---|---|
| 10 PPM H2S | NIOSH REL / ACGIH TLV alarm threshold verification | Nitrogen (N2) or Air | Honeywell BW Solo, Industrial Scientific Tango TX1, MSA Altair |
| 25 PPM H2S | Industry standard span concentration for municipal & industrial monitors | Balance Nitrogen | BW GasAlert, RAE Systems ToxiRAE Pro, Dräger Pac 6500 |
| 50 PPM to 100 PPM H2S | High-range refinery fixed-point transmitters and scrubber systems | Balance Nitrogen | Sensidyne, Det-Tronics, Honeywell Sensepoint XCD |