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