Methane 2.5% (50% LEL)/ Oxygen 20.9%/ Nitrogen Calibration Gas

Methane 2.5% (50% LEL) / Oxygen 20.9% / Nitrogen Calibration Gas

The Methane 2.5% (50% LEL) / Oxygen 20.9% / Nitrogen Calibration Gas Cylinder is a certified calibration gas mixture designed for calibrating and bump testing compatible combustible gas and oxygen detectors. Containing 2.5% methane (50% of the Lower Explosive Limit), 20.9% oxygen, and balance nitrogen, this gas mixture provides a dependable reference standard for verifying detector accuracy, sensor response, and alarm functionality.

Commonly used by industrial safety professionals, oil and gas operations, wastewater treatment facilities, manufacturing plants, utilities, mining operations, environmental consultants, and confined space entry teams, this calibration gas supports routine detector maintenance while helping organizations maintain safe working environments.

Engineered for Accurate Combustible Gas Calibration

Routine calibration and functional bump testing help ensure methane detectors respond correctly to combustible gas hazards before entering potentially dangerous work areas. This certified gas mixture helps identify sensor drift, verify alarm activation, and maintain detector performance in accordance with manufacturer recommendations.

The included 20.9% oxygen concentration represents normal atmospheric oxygen conditions, allowing users to verify oxygen sensor accuracy while simultaneously testing combustible gas sensor performance using a single calibration gas cylinder.

Trusted for Industrial Safety Programs

Whether supporting confined space entry procedures, facility maintenance, industrial production, utility operations, environmental monitoring, or emergency response teams, this calibration gas provides consistent and repeatable performance for professional gas detector maintenance programs.

Key Features

• Certified Methane 2.5% (50% LEL) calibration gas mixture
• Contains 20.9% oxygen with balance nitrogen
• Designed for combustible gas and oxygen detector calibration
• Suitable for routine calibration and functional bump testing
• Helps verify sensor accuracy and detector alarm response
• Supports preventive maintenance and workplace safety programs
• Compatible with many portable and fixed gas detection instruments
• Manufactured for professional industrial safety applications

Common Applications

• Methane gas detector calibration
• Combustible gas monitor bump testing
• Oxygen sensor verification
• Confined space entry programs
• Oil and gas production facilities
• Wastewater treatment plants
• Industrial manufacturing operations
• Chemical processing facilities
• Utility maintenance programs
• Occupational health and safety compliance

Your Source for Professional Calibration Gases

Activated Carbon Depot supplies certified calibration gases, specialty gas mixtures, regulators, and gas detection accessories for industrial facilities, municipalities, laboratories, utilities, and emergency response organizations. Our dependable products help customers maintain accurate gas detection equipment, streamline calibration procedures, and support safer workplaces across a wide variety of industries.