Squirt bottle
A squirt bottle is a laboratory device for providing liquids such as water , acetone or ethanol . In addition to the laboratory, wash bottles are used in many areas where liquids need to be introduced precisely and in doses.
Modern wash bottles consist of a hermetically sealed bottle body made of polyethylene and an angled riser tube protruding into the liquid. The liquid is pressed out by squeezing the bottle through a small opening at the tip of the tube so that the target of the jet and the amount of liquid can be precisely dosed.
A suction bottle is constructed in a similar way for sucking up small amounts of liquid (not to be confused with a vacuum-tight suction bottle ). The angled riser pipe is cut off from a polyethylene wash bottle or the angled riser pipe is held straight; “ Turned upside down”, the previously squeezed empty bottle can be used to simply suck up spilled liquids as well as mercury pellets.
The "classic" squirt bottle, also known as "injection piston", used before the invention of polyethylene, was made of glass. The liquid was not pressed out by squeezing it, but had to be blown in through a second tube so that the liquid flowed out due to the excess pressure. When washing out precipitates (precipitated solids) in Büchner funnels , it can also be used for washing with hot washing liquid.
Individual evidence
- ^ Walter Wittenberger: Chemische Laboratoriumstechnik , Springer-Verlag, Vienna, New York, 7th edition, 1973, pp. 30–31, ISBN 3-211-81116-8 .
- ^ Brockhaus ABC Chemie , VEB FA Brockhaus Verlag Leipzig 1965, p. 1324.