absorptiometer

absorptiometer [ANALY CHEM] 1. An instrument equipped with a filter system or other

simple dispersing system to measure the absorption of nearly monochromatic radia-

tion in the visible range by a gas or a liquid, and so determine the concentration

of the absorbing constituents in the gas or liquid. 2. A device for regulating the

thickness of a liquid in spectrophotometry. { əb so ˙ rp te ¯ a ¨ məd ər}