Phosphine pesticide research

Phosphine pesticide research

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Caption: Phosphine pesticide research. Entomologist injecting fumigant samples into a gas chromatograph to determine phosphine concentrations. Fumigation is the use of gaseous pesticides, commonly used when dealing with insect pests in buildings. Phosphine (PH3) is a colourless, flammable, toxic gas. It is generated from phosphide tablets by a reaction following the addition of water. Photographed at the Agricultural Research Service (ARS) Crop Improvement and Protection Research Unit in Salinas, California, USA. The ARS is the research department of the US Department of Agriculture (USDA).

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