BIOLOGICAL POND FILTER

Wet Dry Filter Sump

wet dry


(WET/DRY) a reference to characterization of contamination within a sample of any media during laboratory analysis, especially spectroanalysis. Specimens being analyzed are either wet weight (ww) or dry weight (dw), meaning the wet samples have been ashed to remove all water.


(WET/DRY) Describes the operational condition: which must be complied with for the primary and reference sides of a pressure transducer, ie. the reference side must always be maintained in clean, dry, non-corrosive conditions.

filter


device that removes something from whatever passes through it


A device for suppressing electrical or sound waves of frequencies not required


A porous device for removing impurities or solid particles from a liquid or gas passed through it


remove by passing through a filter; "filter out the impurities"


A screen, plate, or layer of a substance that absorbs light or other radiation or selectively absorbs some of its components


an electrical device that alters the frequency spectrum of signals passing through it

sump


an oil reservoir in an internal combustion engine


a well or other hole in which water has collected


A pit or hollow in which liquid collects, in particular


A depression in the floor of a mine or basement in which water collects


cesspool: a covered cistern; waste water and sewage flow into it


The base of an internal combustion engine, which serves as a reservoir of oil for the lubrication system