This black streak plate is used for the streak test and hardness tests for minerals. Our streak plates are 2" x 2" tiles and clean easily with soap and water for years of use!
*Available in singles with a discount once you purchase 10.
CC Directors: This is the type of streak plate needed for Week 14's Streak Test Experiment. It is flat on both sides so students can perform the test and streak-write their name on the other side!
