Hydrogen Sulfide (H2S) — High Purity Gas

Yes. H2S gas can be purchased as a precision calibration standard from SpecGas Inc. Available in concentrations from 300 ppb to 10% volume, cylinders come in disposable aluminum, disposable steel, refillable aluminum or steel, and nickel-plated options. Pricing is available on request and custom blends can be produced to your exact specification.

SpecGas Inc. offers H2S calibration gas from 300 ppb (sub-ppm) up to 10% by volume. This broad range covers PPB-level, low PPM (1–100 ppm), and mid-PPM to percent concentrations, making these blends suitable for environmental monitoring, detector calibration, and industrial process applications requiring varying sensitivity levels.

H2S is available in disposable aluminum cylinders, disposable steel cylinders, refillable aluminum or steel cylinders, and nickel-plated cylinders. Gas phase volumes range from 17 liters to 2,000 liters, supporting everything from portable field bump testing to extended laboratory or industrial use where larger volumes are required.

SpecGas uses a proprietary internal cylinder treatment process specifically developed for reactive gas mixtures like H2S. This treatment minimizes wall reactions and concentration drift, resulting in extended shelf life compared to standard industry cylinders. A SpecGas Stability Guarantee backs reactive gas mixtures, ensuring your calibration standard remains accurate throughout its intended service period.

Yes. All H2S calibration gas standards produced by SpecGas Inc. are NIST traceable, manufactured with state-of-the-art blending equipment and analytical verification processes. NIST traceability ensures your gas standard meets national accuracy benchmarks, which is essential for compliance-driven applications in environmental monitoring, occupational safety programs, and industrial calibration requirements.

H2S is a toxic, reactive gas with an OSHA-regulated exposure limit. Users must follow OSHA-approved occupational safety programs, perform regular bump testing before each shift, and calibrate detectors when bump tests fail. Special precautions are required in confined spaces and poorly ventilated areas. Always consult the product SDS and OSHA guidelines before use.