Which item is described as a reservoir with ten sections, designed to hold tubes and maintain volume calculations?

Which item is described as a reservoir with ten sections, designed to hold tubes and maintain volume calculations?

• A. Petri Dish
• B. Microcentrifuge Tube Rack
• C. Peg Rack
• D. Pipette Tips

Answer: (B)

Organizing and securing small tubes to manage volumes is what this item is about. A microcentrifuge tube rack is designed as a reservoir with individual slots for microcentrifuge tubes, often arranged in a fixed grid such as ten positions. This structure keeps each tube upright and in a known location, which makes it easy to track how much liquid is in each tube and to perform accurate pipetting—every tube stays in its designated spot, reducing mistakes in volume calculations. Other items aren’t built for this purpose. A Petri dish is for culturing specimens, not for holding tubes. A peg rack is used to support items on pegs but isn’t typically described as a dedicated ten-section tube-holding reservoir. Pipette tips racks hold tips, not tubes.

Organizing and securing small tubes to manage volumes is what this item is about. A microcentrifuge tube rack is designed as a reservoir with individual slots for microcentrifuge tubes, often arranged in a fixed grid such as ten positions. This structure keeps each tube upright and in a known location, which makes it easy to track how much liquid is in each tube and to perform accurate pipetting—every tube stays in its designated spot, reducing mistakes in volume calculations.

Other items aren’t built for this purpose. A Petri dish is for culturing specimens, not for holding tubes. A peg rack is used to support items on pegs but isn’t typically described as a dedicated ten-section tube-holding reservoir. Pipette tips racks hold tips, not tubes.