What is the use of a Büchner flask?
Uses. A Büchner flask can be used with a Büchner funnel for separating solids and liquids. Water is poured into the Büchner funnel and the liquid passes through filter paper and is sucked up by a vacuum attached to the side of the Büchner flask, while the solid stays behind in the Büchner funnel.
How does suction filtration work?
Suction filtration (also called vacuum filtration) is a technique used to separate liquids from solids. In this technique, an aspirator sucks out the air that is contained in the flask where the Büchner funnel with a filter is placed.
What is a filter flask used for in chemistry?
Definition of filter flask : a flask that is used for receiving a filtering liquid and that is usually of heavy-walled glass and is often provided with a side tube to connect with a suction pump.
What is filtering flask?
What is flask tube?
Schlenk line. A Schlenk flask, or Schlenk tube, is a reaction vessel typically used in air-sensitive chemistry, invented by Wilhelm Schlenk. It has a side arm fitted with a PTFE or ground glass stopcock, which allows the vessel to be evacuated or filled with gases (usually inert gases like nitrogen or argon).
What is filtration used for?
filtration, the process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles. Either the clarified fluid or the solid particles removed from the fluid may be the desired product.
What are the uses of watch glass?
A watch glass is a round, concave glass dish used for evaporation in chemistry. It can also be employed for weighing solids and as a lid for flasks and beakers.
How do filter papers work?
By volume filtration the particles are caught in the bulk of the filter paper. By surface filtration the particles are caught on the paper surface. Filter paper is mostly used because even a small piece of filter paper will absorb a significant volume of liquid.
What is the function of filtering flask?
Screw or pushed in stopper. A thermos stopper is usually made of two different materials: plastic or cork.
What to use instead of a flask?
Use the FLASK_DEBUG system environment variable, instead of MYFLASKAPP_ENV, to control different configs for development and production environments; 0.10.1 (08/28/2016) Fix invoke test command. 0.10.0 (08/28/2016) Update to Flask 0.11. Use Click instead of Flask-Script for CLI commands. 0.9.0 (03/06/2016) Update stale requirements. Add CSRF protection.
How to use Jinja filter within a flask application?
{% %} – statements
What to use as a filter?
– array – Range or array to filter. – include – Boolean array, supplied as criteria. – if_empty – [optional] Value to return when no results are returned.