Streak plate are ideally sized for filed or lab testing. to test, rub across the specimen to determine streak color; use black for light minerals. size: 2inchx2inch. package of 10
Hotplate, Guardian 5000, e-G51HP07C, Material: Ceramic, Voltage: 120V, Stirring from 60 to 1600 rpm, Temperature range of ambient +5 deg C to 500 deg C (ceramic top) or 380 deg C (aluminum top), power cord (included), stirring model include a 1.5in (3.8cm) PTFE coated stir bar, Size: 7x7in