ClipArt ETC
Apparatus used for distillation, separating liquid from the impurities contained in it. A, reservoir; B, light for heating; C, connecting tube; D, steam passes into; E, pipe where cold water is supplied; F, discharged liquid; H, pure water.

Distillation

Apparatus used for distillation, separating liquid from the impurities contained in it. A, reservoir;…

The paper filter is folded and placed in a funnel. The filter stand holds the funnel and filter over a container to receive the filtered liquid.

Filter Stand for Chemistry Experiments

The paper filter is folded and placed in a funnel. The filter stand holds the funnel and filter over…

Any substance, as cloth, paper, porous porcelain, or a layer of charcoal or sand, through which liquid or gas is passed to remove suspended impurities or to recover solids.

General Purpose Filter

Any substance, as cloth, paper, porous porcelain, or a layer of charcoal or sand, through which liquid…

Paper filter used in chemistry experiments. The filter on the left is folded to fit into a funnel. The filter on the right is fluted.

Paper Filter

Paper filter used in chemistry experiments. The filter on the left is folded to fit into a funnel. The…

"A filter to strain out the germs at the house tap. Such a filter must be cleaned and boiled weekly." —Davison, 1910

Tap water filter

"A filter to strain out the germs at the house tap. Such a filter must be cleaned and boiled weekly."…

There are many different kinds of funnels that have been adapted for specialized applications in the laboratory. Filter funnels, thistle funnels, and dropping funnels have stopcocks which allow the fluids to be added to a flask slowly.

Roost Funnel

There are many different kinds of funnels that have been adapted for specialized applications in the…

An illustration of a section of a sand-filter bed.

Sand-Filter Bed

An illustration of a section of a sand-filter bed.

"A sandy stratum, a a, acting as a filter, occupies an inclined position between two other strata impervious to water, such as clay, the water being absorbed by the superficial parts of the strata, as at a a (which may be of very great extent), will penetrate through its whole depth, and, finding no egress below on account of the basin-like form of the stratum, or from its resting at the lower termination upon a compact rock, will accumulate." — Wells, 1857

Sandy Stratum

"A sandy stratum, a a, acting as a filter, occupies an inclined position between two other strata impervious…

"In mining, a trough made of boards, used for separating gold from the gravel and sand in which it occurs. Its bottom is lined with riffles, and these, with the help of quicksilver, arrest and detain the particles of gold as they are borne along by the current of water." &mdash;Whitney, 1889 <p>Illustration of miners working in a forest, shoveling material into the sluice.

A Sluice Box - Miners Work in the Forest

"In mining, a trough made of boards, used for separating gold from the gravel and sand in which it occurs.…

A filter, sieve, or the like for straining liquids.

Pulp Separation Strainer

A filter, sieve, or the like for straining liquids.