There isn't a specific lab "used" for pouring 50 ml of liquid. It's a common procedure done in many labs, and the specific equipment used would depend on the specific liquid and experiment.

Here's a breakdown of what's typically involved:

Equipment:

* Graduated cylinder: This is the most common tool for measuring liquids accurately. You'd choose one with a capacity slightly larger than 50 ml.

* Beaker: A beaker is a good choice for holding the liquid once it's been transferred.

* Funnel: A funnel can help avoid spills when pouring, especially if the receiving container has a narrow opening.

Procedure:

1. Measure the liquid: Use the graduated cylinder to carefully measure 50 ml of the liquid.

2. Pour carefully: Slowly pour the liquid from the graduated cylinder into the beaker, using a funnel if necessary.

3. Clean up: Dispose of any excess liquid and clean all equipment thoroughly.

Important Considerations:

* Liquid type: Some liquids are corrosive or hazardous, so appropriate safety precautions should be taken.

* Accuracy: The level of accuracy needed will determine the choice of equipment. If precise measurements are required, a graduated cylinder is best.

* Safety: Always wear appropriate safety equipment, such as gloves and safety glasses, when working with liquids in a lab.

Let me know if you have any other questions!