Environmental Express HotBlock 200 SC2050-54 Heating Block, 54-position, 50mL; 120 VAC, Same dependability with increased temperature rangeReach higher temperatures—perform more proceduresPTFE-coated blocks for chemical and corrosion resistanceIncluded polycarbonate transfer racks set on the block for easy placement and removal54-well capacity accepts 50 mL cups120 VAC operation