In science, a stand that you put things in can be called a few different things depending on its purpose and what it holds:

* Stand: This is the most general term and can refer to any structure that supports something else.

* Test tube rack: A stand specifically designed to hold multiple test tubes.

* Beaker rack: A stand designed to hold beakers.

* Erlenmeyer flask rack: A stand designed to hold Erlenmeyer flasks.

* Petri dish rack: A stand designed to hold Petri dishes.

* Bunsen burner stand: A stand that supports a Bunsen burner.

* Retort stand: A stand with a vertical rod and a base, used to hold various pieces of laboratory equipment such as clamps, rings, and funnels.

* Ring stand: A stand that supports a ring, which can be used to hold beakers, flasks, or other equipment.

* Support stand: A general term for any stand that supports equipment in a laboratory.

The specific name of the stand will depend on its design and the specific equipment it is intended to hold.