How to use Filter-paper in a sentence
The residue on the filter paper gives (3) the substances insoluble in water.
It is washed by ejecting a jet of water, ammonia or other prescribed liquid on to the side of the filter paper until the paper is nearly full.
If the precipitate may be ignited, it is transferred to a clean, weighed and recently ignited crucible, and the filter paper is burned separately on the lid, the ash transferred to the crucible, and the whole ignited.
The liquid to be filtered is poured into the cone, preferably down a glass rod upon the sides of the funnel to prevent splashing and to preserve the apex of the filter-paper, and passes through the paper, upon which the solid matter is retained.
A fragment thrown on the surface of water rapidly disengages hydrogen, which gas, however, does not inflame, as happens with potassium; but inflammation occurs if hot water be used, or if the metal be dropped on moist filter paper.Advertisement
It is then allowed to stand twenty-four hours, filtered, washed with dilute ammonia, dried, ignited to constant weight and weighed, the filter paper being incinerated separately after moistening with nitric acid.
They are odourless and tasteless, and some yield clear aqueous solutions - the real gums - while others swell up and will not percolate filter paper - the vegetable mucilages.
Leave the Petri dish flat for a few minutes to allow the seeds to adhere to the damp filter paper.
Gel filter paper is typically used in theater production for colored lighting.
The sweat is absorbed onto a piece of filter paper and is then analyzed for its salt content.Advertisement
In some cases the doctor may order a filter paper or glucose content test of nasal secretions to check for the presence of cerebrospinal fluid.
A dry piece of filter paper is taped to the area where the pilocarpine was applied.
The filter paper is called a sweat patch.