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Phosphine (PH3) Gas Detectors

Phosphine (PH3)—a highly toxic, flammable gas—is used in the semiconductor industry, chemical processing, and the fumigation of grain, food products, and tobacco before international transport. Phosphine is highly flammable and may spontaneously ignite in the air or even explode when mixed with oxygen.

Keep workers safe from Phosphine exposure. Choose to purchase, rent or lease PH3 monitors. Talk to an expert for your best option.

Phosphine gas detector

Characteristics of Phosphine

Phosphine is a colorless, flammable, highly toxic gas with a fishy or garlic-like odor. Phosphine acts on the central nervous system and lungs, leading to pulmonary edema. Symptoms like faintness, vomiting, headache, tightness in the chest may appear rapidly after exposure. Even a short exposure to an acute amount of phosphine can lead to chronic neurological problems.

Phosphine is highly flammable and may spontaneously ignite in the air or even explode when mixed with oxygen. Phosphine coming in contact with oxidizers, halogenated hydrocarbons, or even aluminum and copper may cause the same. You must use extreme care whenever working with or around phosphine.

More about Phosphine expand table collapse table


Will Explode LEL 1.79%
Extremely toxic
Celphos, Delicia, Detia, Hydrogen Phosphide, Phosphoretted Hydrogen,Phosphorus Trihydride
Exposure limits:
PEL\TWA: .3 ppm
STEL: 1 ppm
IDLH: 50 ppm
Chemical intermediate, doping agent, pesticide, fumigant

Effects of Various PH3 Levels

PH3 Level in PPM
Resulting Conditions on Humans
OSHA Permissible Exposure Limit (PEL).
OSHA Short Term Exposure Limit (STEL).
Diarrhea, nausea, respiratory distress.
Lethal after 45 minutes.
Lethal after 1-3 minutes.

How to Detect Phosphine

Industrial Scientific’s GasBadge® Pro accurately displays levels of phosphine, and with the aspiration pump add-on, the Ventis® Pro5 and MX6 iBrid® multi-gas detectors also measure phosphine levels in confined spaces. The Radius BZ1 Area Monitor can be used for phosphine detection around your site.

Area Monitor

Radius BZ1

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Multi-Gas Monitor

Ventis Pro5

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Multi-Gas Monitor

MX6 iBrid

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Single-Gas Monitor

GasBadge Pro

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