filter-paper

As he flew north, Maultsby activated a giant filter-paper mechanism to scoop up radioactive dust.

The U-2 spy plane fiasco Dobbs, Michael 2008

It is here that Martin and Synge's method has enjoyed great success, especially in what is perhaps its most important form, and is called filter-paper chromatography.

Nobel Prize in Chemistry 1952 - Presentation Speech 1964

This is washed on to a filter-paper, dried, ignited, and weighed.

The Handbook of Soap Manufacture H. A. Appleton

The precipitate is dried, transferred to a weighed Berlin or platinum crucible; the filter-paper is carefully burnt, and its ash added to the precipitate, which is then ignited, at first gently over a Bunsen burner, and then more strongly over the blowpipe or in the muffle.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886

Wash the precipitate on to the filter with a jet of alcohol from the wash-bottle; clean the filter-paper, using as little alcohol as possible.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886

Wash it into a beaker, clean the filter-paper (if necessary) with a drop or two of dilute ammonia; evaporate with 10 c.c. of dilute nitric acid to a small bulk; dilute; and filter off the globules of sulphur.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886

Burn the filter-paper separately, and convert any reduced silver into chloride by alternate treatment with drops of nitric and of hydrochloric acid.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886

With small precipitates the filter-paper may be opened out, and placed on a warm asbestos slab till dry; or the funnel and the filter with the precipitate is placed in a warm place, and supported by any convenient means.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886

The filter-paper is opened out over a sheet of note-paper, and, with a camel-hair brush, the precipitate is gently brought into the glass.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886

Run in the standard solution in quantity known to be insufficient; then withdraw a portion of about 2 c.c., with a pipette, and filter through a fine filter-paper into a test tube.

A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886