Figure 1. Cut off the tops of the milk cartons, leaving about 6 inches remaining; use the nail to poke a hole in ONE CORNER of the carton bottom from the inside. Fill the cartons to a depth of one inch with the materials to be tested; one type per carton. Place each carton on top of a 400 ml beaker with the drain hole down. See Figure 1 on the student sheet. Mark the catch beakers up one inch from the bottom with the grease pencil and slowly add 250 ml of water to each carton.
Last updated on October 6, 2005