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Nitrophenyl pentadienal, nitrophenylpentadienal, NPPD, or METKA (Russian for "mark") colloquially known as "spy dust", [1] is a chemical compound used as a tagging agent by the KGB during the Cold War Soviet Era. Soviet authorities in Moscow tracked Americans by applying an almost invisible powder to their clothing, cars, doorknobs and other ...
Deputy Deluxe Dust Collector You need to provide your own suction system for this option–like a shop vac–but if you already have one on hand, this affordable option is a perfect options for ...
A dust collector is a system used to enhance the quality of air released from industrial and commercial processes by collecting dust and other impurities from air or gas. Designed to handle high-volume dust loads, a dust collector system consists of a blower, dust filter, a filter-cleaning system, and a dust receptacle or dust removal system.
Dust-laden gas or air enters the baghouse through hoppers and is directed into the baghouse compartment. The gas is drawn through the bags, either on the inside or the outside depending on cleaning method, and a layer of dust accumulates on the filter media surface until air can no longer move through it.
House dust under a microscope Domestic dust on a ribbon A video on reducing dust exposure in the workplace. Dust control is the suppression of solid particles with diameters less than 500 micrometers (i.e. half a millimeter). Dust poses a health risk to children, [12] older people, and those with respiratory diseases. House dust can become ...
Dust-Off. Dust-Off is a brand of dust cleaner (refrigerant-based propellant cleaner, which is not compressed air and incorrectly called "canned air"). The product usually contains difluoroethane; although some use tetrafluoroethane and tetrafluoropropene as a propellant. It is used to blow particles and dust from computer, keyboards ...
A high concentration of dust is in the inlet stream; The dust is sticky or has a tendency to plug openings; The gaseous contaminant is very soluble or chemically reactive with the liquid; To maximize the absorption of gases, venturis are designed to operate at a different set of conditions from those used to collect particles.
First came the floods. Then the mosquitoes.Now, South Florida, get ready for the dust. A large plume of Saharan Dust — the first of the year — is forecast to reach Florida later this week.