Block - aluminum / Capacity - 25 vials (dia 16 x 100 mm), 1 receptacle for a stainless steel reference thermometer / Dimensions - 190 x 300 x 95 mm (7.5 x 11.8 x 3.7") / Environment - 5 to 50°C (41 to 122°F) / Operating Mode - timed (0 to 180 minutes) or infinity mode