Oxygen (O2) is essential to human life, yet atmospheric shifts toward either oxygen deficiency or oxygen enrichment present immediate and fatal hazards in industrial workplaces. Oxygen depletion, commonly caused by displacement by inert gases, organic oxidation, or chemical reactions, can lead to rapid loss of consciousness without warning, while Oxygen enrichment dramatically increases the flammability and explosive potential of surrounding materials. Regular calibration and testing of your gas detection equipment are critical to verify that sensors accurately detect safe breathing thresholds (20.9% O2) and reliably trip alarms during dangerous atmospheric shifts.

Our single-gas oxygen and zero grade air calibration cylinders provide precision-blended standards designed for rigorous field and workshop maintenance. Offered in 20.9% O2 Zero Grade Air blends for dual-purpose toxic sensor zeroing and O2 span verification, as well as specialised 18% O2 blends for testing low-Oxygen alarm thresholds, our range covers every operational need. Available in both durable steel and lightweight Aluminium options, spanning 34L, 58L, 103L, and 116L portable cylinders for field technicians using monitors like the Ventis MX4, Tango TX1, or GasBadge Pro, up to high-capacity 552L bulk cylinders engineered for automated DSX docking stations, our cylinders deliver NIST-traceable accuracy to ensure continuous workplace safety.