Because of the gravity of the earth !!
A pipette is a laboratory tool used to transport a measured volume of liquid.
beaker,test tube,
A 'Scooopula'® is a spatula-like scoop utensil used primarily in the laboratory settings to transfer solids to:a weigh paper for weighing,a cover slip to measure melting point, or toa watch glass from a flask or beaker through scraping.
The iron stand supports the iron ring when heating substances or mixtures in a flask or beaker.
Desiccators are sealable enclosures containing desiccants used for preserving moisture-sensitive items such as cobalt chloride paper for another use. A common use for desiccators is to protect chemicals which are hygroscopic or which react with water from humidity.
beacor
test tubes...
test tubes
It is used in a laboratory, but is not considered a laboratory tool by most people.
A paper is used in transferring solid substances so that we can filter the liquid substances.
testtube
In a laboratory setting, spatulas are used for things like scraping substances from the insides of containers. They are also used to transfers substances from one container to another, and for spreading substances that have a thick texture.
balance
A pipette is a laboratory tool used to transport a measured volume of liquid.
The dessicator is a very usual laboratory instrument used to dry substances or to store dry substances.
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Microscope.