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Golden Nematode Program Manual - Phytosanitary Resources

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Procedures: Preparation, Disinfection, and Clean-up<br />

Sanitation<br />

Photo by Dan Kepich<br />

FIGURE 2-2-8 Pressure Washing Equipment and Supplies<br />

Steam Heat Treatment<br />

Steam at a temperature of 212° F will destroy, in a short period of<br />

exposure, most pathogenic microorganisms of the common vegetative<br />

forms or the spore types when in the growing or vegetative state.<br />

The steam jet method can be used for sterilizing equipment, since this<br />

method takes advantage of the considerable latent heat liberated when<br />

steam condenses into water.<br />

If the necessary degree of heat is generated in all parts of the material,<br />

then the steam jet method is effective for quarantine purposes. Live<br />

steam from a jet or nozzle is forced into or through a more or less loose<br />

and open mass of material in such amount and for such period<br />

required to raise the temperature of all parts of the mass to<br />

approximately 212°F.<br />

See the PPQ Treatment <strong>Manual</strong> for more information about steam heat<br />

treatment at http://www.aphis.usda.gov/import_export/plants/<br />

manuals/ports/treatment.shtml.<br />

2-2-22 <strong>Golden</strong> <strong>Nematode</strong> <strong>Program</strong> <strong>Manual</strong> 07/2008-01<br />

PPQ

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