Certified Air Safety is proud to represent only one manufacturer of calibration gases.


The recognized global leader for calibration gas mixtures and related equipment.


See our Calgaz Cylinder Specifications

See our Calgaz Regulators

Gas Cylinder Specifications

Calgaz Quality Warranty Statement


About CALGAZ: ISO 9001:2008 Certification

As part of our commitment to excellence, our Cambridge facility has received and continues to maintain ISO 9001:2008 Certification.

This is but another example of the investment Air Liquide has made in order to provide our CALGAZ customers with the highest quality gases, equipment and service.


Quality Assurance



Following are some of the key reasons that bring CALGAZ customers the quality that you can count on.


Gas Mixtures

• All gas mixtures are made gravimetrically.
• All master blends are analyzed 100%.
• Lot analysis on trans-filled cylinders.
• All gas mixtures are NIST Weight Traceable.



• All cylinders are leak checked with a Mass Spectrometer.
• All cylinders are pressure checked.
• All lots of cylinders are traceable by lab database



• All regulators are designed and built in-house.
• Rigid quality control of all supplied machine parts.
• Statistical process control in place.
• 100% of all regulators are function tested.
• All regulators are leaked checked.
• Full two year warranty on all regulators.