View source for Bottle top dispenser

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'''Bottle top dispenser''' or ''' bottle top media dispenser''', also called '''lab dispensers''' or '''lab dispensers''', are lab devices used to deliver precise volumes of liquid from a bottle, similar in operation with an [[automatic burette]], only it delivers more exact volumes.

==Description==
A bottle top media dispensers involves a piston on a plunger which is pushed down against a spring: as the spring pushes the piston back into its original position, it draws the medium up from a reservoir underneath. When pushed down again, plunger infuses the medium out the dispenser tip. The bottle top dispenser has no gaskets or seals. There are two types of dispensers: mechanical and electronic.

The bottle top media dispenser is limited in the total amount of medium it can dispense before the source bottle requires a refill, making it convenient for small applications, but less so for larger. They are also more difficult to calibrate than pipettes.

==How to operate a laboratory dispenser==
''To be added''

==Availability==
Bottle top dispensers are sold by lab suppliers.

==Projects==
*Deliver precise volumes of liquids/solutions

==Maintenance==
Make sure to clean them properly, both on the inside and on the outside.

==See also==
*[[Air displacement pipette]]
*[[Automatic burette]]
*[[Burette]]
*[[Pipette]]
*[[Syringe]]

==References==
<references/>
===Relevant Sciencemadness threads===
*[http://www.sciencemadness.org/talk/viewthread.php?tid=64091 Small manual dispenser pump for small containers?]

[[Category:Equipment]]
[[Category:Lab equipment]]