10 pack of high quality polyethylene well spotting plate used for observing small chemical reactions. Each of the 12 wells measures approximately 1" in diameter and can hold approximately 1.5mL. The plastic material these plates are made from allows them to be washed and reused. Can be used to compare results among students in a lab, or in classroom demonstrations. Size of plate: 4.6"L x 3.5"W x 0.4"H.