An apparatus is a tool or object you use to do a job. An apparatus could be almost anything. A medical apparatus could be a thermometer.
The plural for apparatus can be either apparatuses or remain as apparatus.
I built that apparatus.
Renin is the enzyme secreted by the juxtaglomerular apparatus.
A telescope is an apparatus for viewing stars.
a record of scientific apparatus.
King Apparatus was created in 1987.
King Apparatus ended in 1994.
Harvard Apparatus was created in 1901.
What is the main function of the Golf apparatus
one is specific
the Golgi apparatus is like the stomach for to also stores protein as the Golgi apparatus does as well but in stead for a cell.
Examples: distillation apparatus, filtration apparatus, installations for synthesis in organic chemistry, installation for separation by solvent extraction, laboratory demineralization apparatus etc.