NationMaster - Encyclopedia: Büchner funnel

Büchner funnel is a piece of laboratory equipment used in filtration. It is traditionally made of porcelain, but these days plastic funnels are also available. On top of the funnel-shaped part there is a cylinder with a perforated plate separating it from the funnel. The filtration material, often filter paper, is placed on the plate. The liquid to be filtered is poured into the cylinder and drawn through the perforated plate by vacuum suction. A vacuum pump is a pump that removes gas to leave behind a partial vacuum (of varying quality, depending on the pump). ... Biochemistry laboratory at the University of Cologne. ... The article is about the separation process. ... A rare Dresden porcelain figurine Porcelain is a type of hard semi-translucent ceramic generally fired at a higher temperature than glazed earthenware, or stoneware pottery. ... The term plastics covers a range of synthetic or semi-synthetic polymerization products. ... Filter paper is any of various grades of coarse unfinished paper which can be used to separate solids from a liquid in which they are suspended. ... HI LIQUIDX ^_^ Your name is now immortalised within the realms of Wikipedia! A liquid will assume the shape of its container. ... The article on the vacuum cleaner is located elsewhere. ...

Categories: Laboratory equipment Laboratory equipment refers to the various tools and equipment used by scientists working in a laboratory. ... An agar plate is a sterile Petri dish that contains agar plus nutrients, and is used to culture bacteria or fungi. ... An aspirator is a common piece of laboratory equipment. ... A bunsen burner with needle valve. ... A calorimeter is a device used for calorimetry, the science of measuring the heat of chemical reactions or physical changes. ... A colorimeter is generally any tool that characterizes colour samples to provide an objective measure of colour characteristics. ... A laboratory centrifuge A centrifuge is a piece of laboratory equipment that applies centrifugal force to a sample. ... A fume hood, fume cupboard, or just hood device common to chemistry laboratories designed to keep hazardous fumes out of the room air by exhausting them out of the building before anyone can potentially breathe them. ... A microscope (Greek: micron = small and scopos = aim) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. ... Microtiter plates are plastic sample holders used in biology or chemistry research facilities. ... Plate readers are laboratory instruments designed to detect biological, chemical or physical events in samples stored in microtiter plates. ... In physics, spectrophotometry is the quantitative study of spectra. ... A thermometer is a device used to measure temperatures or temperature changes. ... Laboratory glassware refers to a number of tools used by chemists and biologists in performing scientific experiments. ... A burette (also buret) is a vertical cylindrical piece of laboratory glassware with a volumetric graduation on its full length and a precision tap, or stopcock, on the bottom. ... A conical measure is a type of laboratory glassware which consists of a conical cup with a notch on the top to allow for the easy pouring of liquids. ... A cuvette is a kind of laboratory glassware, usually a small square tube, sealed at one end, made of plastic, glass, or optical grade quartz and designed to hold samples for spectroscopic experiments. ... Laboratory flasks fall into the category of laboratory apparatus known as glassware. ... Erlenmeyer flask An apparatus feeding into an Erlenmeyer flask An Erlenmeyer flask (also called conical flask) is a type of laboratory glassware which consists of an inverted conical base with a cylindrical neck. ... Categories: Laboratory equipment | Chemistry stubs ... A volumetric flask (vol flask for short) is a piece of laboratory glassware used to measure a very precise and accurate amount of a liquid, and is used for such when the amount is too big for a pipette or burette. ... A Buchner flask (Sometimes called a vacuum flask, but this can be confused with thermoses) is a thick walled erlenmeyer flask with a glass tube and hose barb leading about an inch out of the neck of it. ... Categories: Move to Wiktionary | Chemistry stubs | Laboratory equipment ... Illustration of a graduated cylinder Picture of a graduated cylinder. ... A pipette with a squeeze bulb on the end A pipette is a glass tube used for the delivery of a measured quantity of liquids. ... Man looking at fungus inside of petri dishes A Petri dish is a shallow glass or plastic cylindrical dish that biologists use to culture microbes. ... A Soxhlet extractor is a type of laboratory glassware invented in 1879 by Franz von Soxhlet. ... A test tube (Sometimes culture tube) is a kind of laboratory glassware, composed of a fingerlike length of glass tubing, open at the top, sometimes with a rounded lip at the top, and a rounded U shaped bottom. ... Thistle tube, Approximately 12 inches long A thistle tube is a piece of laboratory glassware used in a chemistry laboratory. ... Caesium fluoride sample on a watch glass In a chemistry laboratory a watch glass is a small concave circular piece of glass. ...