Streak Plate, Porcelain, 1 Each

The United Scientific® Streak Plate, Porcelain by United Scientific is an unglazed porcelain test plate measuring 2.5" x 2" x 1/8". It gives students and instructors a flat, rough porcelain surface for testing the hardness of rocks and minerals during identification exercises. Sold individually, it suits earth science classrooms, geology teaching labs, and mineral kits that need replacement plates.