What materials are needed to complete this experiment?

As you have not specified the experiment you are referring to, I cannot provide a specific answer. However, in general, the materials needed to complete an experiment can vary greatly depending on the nature of the experiment. Some common materials include:

1. Basic laboratory equipment - such as beakers, test tubes, pipettes, graduated cylinders, and petri dishes.
2. Chemicals or reagents - depending on the experiment, various chemicals may be required for reactions, analysis, or as controls.
3. Biological materials - if the experiment involves living organisms, you may need specific samples, organisms, or biological reagents.
4. Apparatus - specific experimental apparatus such as spectrophotometers, microscopes, centrifuges, or chromatography systems may be required.
5. Safety equipment - protective gear like lab coats, gloves, goggles, or masks may be necessary to ensure safety during the experiment.
6. Measurement tools - instruments such as rulers, timers, balances, or thermometers may be needed for data collection and analysis.

It is essential to consult the specific experimental procedure or protocol to determine the exact materials required for that particular experiment.