Which item is designed to hold test tubes upright in a laboratory?

Which item is designed to hold test tubes upright in a laboratory?

• A. Test Tube Brush
• B. Test Tube Rack
• C. Stirring Rod
• D. Serological Pipette

Answer: (B)

Holding test tubes upright is the job of a test tube rack. It’s a rack with evenly spaced slots that accept tubes, keeping them vertical, stable, and organized. This design prevents tipping, reduces the risk of spills or contamination, and makes it easy to transport several tubes at once or read labels while you work. Racks are made from materials that withstand lab conditions and come in sizes to fit different tube diameters. The other items have different purposes: a test tube brush cleans the inside of tubes, a stirring rod mixes solutions, and a serological pipette transfers precise volumes of liquid.

Holding test tubes upright is the job of a test tube rack. It’s a rack with evenly spaced slots that accept tubes, keeping them vertical, stable, and organized. This design prevents tipping, reduces the risk of spills or contamination, and makes it easy to transport several tubes at once or read labels while you work. Racks are made from materials that withstand lab conditions and come in sizes to fit different tube diameters.

The other items have different purposes: a test tube brush cleans the inside of tubes, a stirring rod mixes solutions, and a serological pipette transfers precise volumes of liquid.