We will use

- 6 cups

- 3 paper filters

- 1 funnel

- 3 evaporating dishes

- 3 popcicle sticks

- 1 teaspoon of citric acid

- 1 teaspoon of epsom salt

- 1 teaspoon of kosher salt

- safety glasses [ very important ]

- syringe

- 150 ml of water

- magnifying glasses

- black paper [ optional ]

- Post-its

- tray