Gas Detector Calibration & Accessories

Most industry standards and OSHA guidelines recommend calibrating gas analyzers at least every 6 months, with bump testing performed before each use or shift. If a bump test fails, immediate full calibration is required. Detectors exposed to extreme environments, contamination, or physical impact should be calibrated more frequently per manufacturer recommendations.

A NIST-traceable calibration gas is a certified gas mixture whose concentration has been verified against national standards set by the National Institute of Standards and Technology (NIST). This traceability ensures the accuracy and reliability of gas detector and analyzer calibrations, which is critical for regulatory compliance and workplace safety monitoring.

A bump test is a quick functional check that exposes the detector to a small amount of gas to verify that the sensors and alarms respond correctly — it does not adjust the instrument. A full calibration uses a known-concentration NIST-traceable gas mixture to precisely set the detector's response curve, ensuring accurate measurements across the specified concentration range.

SpecGas Inc. offers calibration gases in a wide range of cylinder sizes to suit field, laboratory, and bulk applications. Options include disposable cylinders from 17 to 103 liters, refillable aluminum and steel cylinders, and high-pressure options from 58 liters up to 2,000 liters gas phase volume. Nickel-plated cylinders are available for reactive and corrosive gas mixtures.

Yes. SpecGas Inc. specializes in custom gas blending to exact customer specifications. Whether you need a specific PPB-level concentration, a multi-component mixture, or a unique balance gas combination, SpecGas can produce blends tailored to your instrument, application, and tolerance requirements using gravimetric blending techniques.

Common balance gases used in calibration gas mixtures include nitrogen (N₂), zero air, helium, and other inert gases. The choice of balance gas depends on the target analyte and the application. For example, nitrogen is commonly used for reactive and toxic gases, while zero air is preferred for atmospheric monitoring and oxygen-based detector calibrations.