earth materials composed of diatoms, skeletons of dead unicellular algae, usually with two symmetric halves. Also known as diatomite, kieselguhr, fossil flour and infusorial earth. See silica.

finely ground fossilized shells of minuscule hard-shelled algae called diatoms; also known as diatomite or kieselguhr, naturally occurring DE is roughly 86% silicon, 5% sodium, 3% magnesium, and 2% iron.

A fully inert, non-volatile substance sometimes recommended as an alternative to traditional chemical treatments for controlling a number of insects and other pests, including Soil Mealy Bugs. Diatomaceous Earth (DE) is made from the skeletal remains of diatoms, a microscopic form of algae. When processed into DE, these skeletal remains form razor-sharp particles which cut into the soft bodies of small insects. While controlling insects, DE does not harm African Violets.

an talc-like dust from skeletal remains of various minute, single-celled algae with cell walls consisting mainly of silica. Used as an insecticide and food supplement.

Ground fossils used as a filter media in DE filters.

Diatoms are microscopic algae with cell walls containing silica. The fossilized remains of diatom shells can be mined (it is a fine powder called diatomaceous earth). The silica is sharp and can cause the death of soft bodied insects; it pierces their skin and dehydrates them.

A processed natural material, the skeletons of diatoms, used as a filter medium.

An earthy deposit formed mainly of diatoms (one-celled marine life forms) that are pulverized and resemble sandy flour.

a filter media that is used in D.E. Filters, in order to produce highly effective filtration. D.E. can be used as a filter aid with sand or cartridge filters, in order to better deal with certain pool or spa cloudy water problems or conditions.

A powdery filtering agent composed of the skeletal remains of a form of plankton (diatoms). Use in Diatomaceous Earth filters.

a light soil consisting of siliceous diatom remains and often used as a filtering material

Fossilized microscopic water organisms such as diatoms and other algae.

Fossilized deposits of diatoms; used for abrasives, polishes and as a filtering agent.

comes from a mineral deposit of the calcareous skeletons of marine plankton (diatoms) that formed sediments in ancient oceans. The mineral is a finely divided powder and serves as an excellent filter aid and can act as a foundation for microbial attachment and growth in bioreactors.

A mineral formed by deposition of siliceous remains of diatoms, microscopic aquatic life forms. Diatomaceous earth has long been used as a catalyst support. Also known as Kieselguhr.

Abrasive powder made of the ground, fossilized shells of aquatic diatoms that damages soft-bodied pests, such as snails and slugs, when they crawl over it.

a powder type used for poulticing stains from stone.

A white powder-like substance consisting of tiny prehistoric diatom skeletons. These skeletons are very porous and make an excellent filter media

A filter media made up of skeletons of Diatoms, used in Diatom filters, able to filter particles down to microns in size.

A fine siliceous earth composed chiefly of the cell walls of diatoms, any of numerous microscopic, unicellular, marine or fresh-water algae. Effective in destroying soft bodied larval pests.

A fine, powdery substance that comes from the calcified remains of prehistoric single-celled marine animals. This very porous substance is a great filtration media.

White powder made up of dead organisms called diatoms. The skeletons of these organisms are porous and provide a filter medium.

Soft, earthy rock composed of the siliceous skeletons of small aquatic plants called diatoms (algae). Frequently used as material for a precoat of filter medium. Capable of absorbing 1.5 to 4 times its own weight in water . Insoluble in acids except hydrofluoric and soluble in strong alkali's.

The refined skeletons of ancient marine organisms, which are frequently used as a filtration medium.

A light, brittle material derived from fossilized microscopic unicellular algae called diatoms, used as a filter in clarifying wine.

A powder made of fossilized skeletons of tiny plankton, called diatoms, that serves as a filtration medium when it forms a cake on the filter element.

A type of silica-rich dirt that is soft, fine-grained, porous, light-colored, and composed of the skeletons of diatoms (one-celled marine organisms with skeletons based on silicon). It is used as a filter.

dii-ah-TOM-ayy-shus errth) An abrasive and powerful dessicant powder made from the shells of diatoms. Sometimes used as an insecticide componant. The sharp particles damage soft-bodied larvae insects causing them to dehydrate and die.

the ground shells of fossilized single-celled diatoms, a shelled algae. Their remains drifted down to ancient sea floor, and grinding them produces sharp edges which shred the outer, protective cuticle on insects.

Geological deposit of siliceous skeleton material of diatoms (algae).

also called D.E.– A white powder composed of fossilized skeletons of one-celled organisms called diatoms. The skeletons are porous and have microscopic spaces. The powder is added through the skimmer and deposits itself on a grid. The powder then becomes the filter medium.

A filtering agent composed of the minute skeletons of diatoms (single-celled organisms).

(DE) - a powdery filtering media composed of the skeletal remains of plankton.

A fine, siliceous (made of silica) "earth" composed mainly of the skeletal remains of dia- toms, a type of free-floating, microscopic plant found in the ocean

Micro fine single-cell fossil material made of almost pure silica, used in the filtering of beer.

A porous and pure form of silica formed from the fossil remains of algae. This form of each has great absorption power and can absorb up to four times its own weight in water. In masques it sets and gels on the skin's surface.

A chalk-like material (fossilized diatoms) used to filter out solid waste in wastewater treatment plants; also used as an active ingredient in some powdered pesticides.

A hydrous of silica which is soft, light in weight and consists mainly of microscopic shells of diatoms or other marine organisms.

Diatomaceous earth (IPA: , also known as DE, diatomite, diahydro, kieselguhr, kieselgur and Celite) is a naturally occurring, soft, chalk-like sedimentary rock that is easily crumbled into a fine white to off-white powder. This powder has an abrasive feel, similar to pumice powder and is very light, due to its high porosity. The typical chemical composition of diatomaceous earth is 86% silica, 5% sodium, 3% magnesium and 2% iron.