Wood's filter

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filter [fil´ter]

1. a device for eliminating or separating certain elements, as (a) particles of certain size from a solution, or (b) rays of certain wavelength from a stream of radiant energy.

2. to cause such separation or elimination.

membrane filter a filter made up of a thin film of collodion, cellulose acetate, or other material, available in a wide range of defined pore sizes, the smaller ones being capable of retaining all the known viruses.

Millipore filter trademark for a device used to filter nutrient solutions as they are administered intravenously.

vena cava filter (vena caval filter) a filter used in the inferior vena cava to prevent pulmonary embolism.

Wood's filter a nickel-oxide filter that holds back all but a few violet rays and passes ultraviolet rays of about 365 nm; see also Wood's light.

Wood's filter

see wood's light.

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