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UL
Underwriters Laboratories, Inc., performs the classification and
evaluation of the properties of a product, as used in construction
and manufacturing
ultrasonic cleaning
The process of cleaning an object using sound waves, water and
detergents to agitate soils.
ULV Fogger
Ultra Low Volume, an electrical/mechanical device used to distribute
and regulate the disbursement of disinfectants and fragrances.
UV Light
Ultraviolet light, wavelengths of visible light, used to detect
urine deposits in carpet, etc.
underlayment
Wood panels as used under a finished floor to provide a smooth
finish.
unit price
The costs of labor, materials, all applicable taxes and all
associated sundry to perform a task or discipline.
unsalvageable
Zero value, rubbish, not always reusable.
unsanitary water
Non-potable water, gray water, category #2 water.
