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PATHOGEN – Any disease-producing organism.
PATHOGENIC – Disease-producing.
PESTICIDE – Agent which prevents, repels, destroys or mitigates pests. Types include insecticides, disinfectants and sanitizers, rodenticides, and herbicides.
PH – A simple chemical scale which expresses the degree of acidity or alkalinity of a solution. The pH scale runs from 0 to 14. Seven is the neutral point. Numbers below 7 indicate acidity, with 0 being 10 times more acidic than 1, 1 being 10 times more acidic that 2, etc. Zero-3 is strongly acidic, 4-6 moderately acidic. Above 7
is the alkaline side. Eight-10 is moderately alkaline, 11-14 is strongly alkaline. Alkalinity is 10 times greater at each full number rise along the scale.
PHOSPHORIC ACID – The most common acid based on phosphorus sometimes called orthophosphoric acid. Used as a mild bowl acid and in formulations of light-duty detergents.
PINE OIL – An oil processed from the gum of pine trees. Used in hard surface cleaning and disinfecting, and distinguished by a characteristic aroma. As a disinfectant it is inactive against staphylococci.
PINE OIL CLEANER – A liquid hard-surface cleaner containing detergents and pine oil. Used to dissolve oil, fatty acids, paints and tars while disinfecting and sanitizing, and deodorizing with a pine scent.
PORCELAIN ENAMEL – A coating of ceramic-type material that is fired or fused to a steel base and used in sinks, bathtubs, etc. This differs from the vitreous china used in toilets.
PRECAUTIONARY STATEMENT – Warnings on product labels to alert users to potential harmful hazards associated with using the product.
PRE-SOAK – A soaking operation, to remove stains, that precedes the regular laundering process.
PRE-SPOT – Removal of stains before more extensive carpet cleaning.
PROPELLANT – An agent used to expel contents from an aerosol under pressure.
QUATERNARY AMMONIUM COMPOUNDS – A class of chemicals used as disinfectant, antistat and softening agents (Quats).
REFINISHING – To apply a new coat of wax or floor finish to a floor.
RESILIENT TILE – Tile that will withstand shock without permanent damage; includes rubber, cork, asphalt, linoleum, vinyl, vinyl asbestos. This tile will give under impact and certain loads, and then return to its original form after the load
RINSE AGENT – A wetting agent used in the last rinse during dishwashing to improve the draining of the water from dishes and utensils.
RINSE AIDS – Surfactants that aid in the rinsing property of water by lowering
its surface tension.