Apparatus used for holding and holding things in the Laboratory:

Clamps – this is used to support test tubes, flasks, burets, etc.
Clamp Holder – this is used to hold clamp in its proper position.
Funnel – this supports the filter paper and facilitates the introduction of liquid to prevent spilling.
Iron Ring – this is mounted on an iron stand to support beakers, flasks, etc.
Iron Stand or Ring Stand – this is used to mount apparatus.
Test Tube Holder – this is used to hold test tube while heating and when working with corrosive reagents.
Tripod – this is to support apparatus which does not have to be attached.
Test Tube Rack – this is used to keep a supply of test tubes for use.

Clamps

The World of Science