Chlorine Calibration Gas — 10 ppm in Nitrogen

For gas detector calibration, a 10 ppm chlorine standard is commonly used because it falls within the typical alarm threshold range for occupational safety. OSHA sets the ceiling limit for chlorine at 1 ppm and IDLH at 10 ppm. Calibration at 10 ppm confirms your detector responds accurately at the most critical exposure threshold for worker safety.

Chlorine calibration gas is used to verify and calibrate gas detectors, analyzers, and monitoring instruments that measure Cl₂ concentrations. It is essential in water treatment facilities, pharmaceutical manufacturing, food processing plants, and industrial environments where chlorine exposure poses a safety risk. Regular calibration ensures instruments respond accurately to real chlorine concentrations.

Nitrogen is an inert, non-reactive gas that provides a stable, interference-free matrix for chlorine. Using nitrogen as the balance gas minimizes unwanted chemical interactions that could degrade the chlorine concentration over time. This ensures the certified concentration remains accurate and stable throughout the cylinder's shelf life, particularly important for reactive gases like Cl₂.

Yes. All chlorine calibration gas mixtures produced by SpecGas Inc. are NIST-traceable gas standards. Each blend is produced using proprietary techniques with analytical instruments calibrated for accuracy verification, ensuring the stated concentration meets recognized national measurement standards required for regulatory compliance and instrument qualification.

SpecGas Inc. offers chlorine calibration gas in 40 lb., 70 lb., and 100 lb. cylinders to accommodate both specialty and bulk gas needs. Cylinders are treated with a proprietary internal process to extend the stability and shelf life of the reactive chlorine mixture. Pricing and availability are provided upon request based on your specific concentration and volume requirements.

Chlorine is a highly toxic and reactive gas requiring strict safety protocols. Handlers must follow OSHA and CDC NIOSH guidelines, use stainless steel or aluminum tubing and regulators rather than brass, and ensure adequate gas detection systems are in place. Proper ventilation, PPE, and emergency response plans are mandatory in any workspace where chlorine gas cylinders are used or stored.