Avon High School juniors Alyson Roth and Emily Mudder explain their colorimeter and pump, which detects contaminates in water. Roth and Mudder will attend the Intel International Science and Engineering Fair in Pittsburgh, Pa. The fair begins Sunday and runs through May 18. (Anna Jauhola/Republic)
Read the article: Four students from Avon, Plankinton headed to international science fair
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