Industrial Fixed Phosphine (PH3) Gas Detector

Gas Detection Q&A - For Your Safety Environments

Built-in advanced gas detector sensor and sound & light alarm to ensure precise and safe gas detection in hazardous applications.

Q: Is Phosphine gas heavier than air?

A: Phosphine gas (PH3) is indeed heavier than air. It has a molar mass of approximately 34.00 g/mol, while air is primarily composed of Nitrogen (N2) and Oxygen (O2), both of which have molar masses around 28.00 g/mol and 32.00 g/mol, respectively. Because PH3 is significantly heavier than the average molar mass of air, it tends to settle and accumulate in low-lying areas, making it important to detect and monitor its presence effectively.
Gas detectors that employ electrochemical sensors are commonly recommended for detecting Phosphine gas. These sensors can provide reliable and precise measurements, with alarms triggered when the gas concentration exceeds a certain threshold. GasDog portable and fixed gas detectors equipped with phosphine-specific sensors are available, making them suitable for both industrial and laboratory settings where PH3 may be present. Regular calibration and maintenance are essential to ensure the continued accuracy and reliability of the detector. Users should also follow safety protocols and guidelines when working with toxic gases like Phosphine.