2.2 Sampling methods
Eggshells
1.) Wash eggshells and make them dry. Pound of grind them in powder.
2.) Take dust in the eggshells out.
3.) Pound marl and eggshells intensively, Mix plaster with eggshells and Hy
4.) Stuff all the ingredient into tube and dry until it is stiff.
5.) Bring ants and sweets to lie on the observed place nearly. Cover them by a plastic box. Scratch around the box by a chalk made from eggshells and the Kaffir lime. Observe burring the experiment.
6.) Record the results.
Kaffir lime
1.) Peel the Kaffir lime and bake it at 60 degrees Celsius for about 2 hours, and then dry for 2 hours.
2.) Ground the Kaffir lime in a mortar.