Ceramic work surface, 7.1 x 7.1 in. Temperature control up to 380°C Benchmark hotplates, stirrers and hotplate-stirrers feature an exceptionally durable, chemical resistant white ceramic work surface. Their space-efficientdesign (8 X 9 in. footprint), makes them ideal for use on crowded benchtops and inside of bio-hoods. Advanced microprocessor controls with convenient turn knobs allow quick, precise adjustment and maintenance of speed and temperature. Safety indicator LED’s on the front panel indicate when the heating and/or stirring functions have been activated. With a square 7.1 in work surface, all three models are compatible with a wide variety of popular sizes of borosilicate glass beakers, flasks, bottles and other vessels. The hotplate/magnetic stirrer model (H4000-HS) comes complete with a support rod for mounting thermometers and temperature probes. Temp. Range: 80 to 380°C Platform Dimensions: 7.1 x 7.1 in./ 180 x 180 mm Operating Temp. Range +4 to +65°C Dimensions: (w x d x h) 8 x 10 x 4.5 in./ 20 x 23 x 11.5 cm Weight: 9 lbs (4kg) Electrical: 120V 60Hz or 230V 50Hz; 500W