These multi-stirrers and multi-hot plate-stirrers feature individual control of stirring speed at each position. Five-position stirring units can stir 5 x 800 ml beakers and the nine-position units can stir 9 x 500 ml beakers with a stirring speed from 100 to 1500 rpm. Hot plate-stirrers heat up to 450°C with ±2.5°C accuracy. Solid ceramic plate size is 12” x 12”, and the base is made of rugged cast aluminum. Maximum weight capacity of 22.6 kg. Dimensions: 17” x 12.5” x 5.5”. Warranty: 1 year. Power: 120 volt. CSA Approved.