Glossary beginning with T

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TCO (Total Cost of Ownership)

approach used to calculate all costs in the life cycle of a device (purchasing, management, maintenance and disassembly).


standard issued by EPA regulating polluting emissions.

TSS (Total Suspended Solids)

parameter used in water quality management and in water purification to indicate the quantity of solids present in suspension, which can be separated by vigorous mechanical means such as vacuum filtration or centrifugation of the water sample.