Profile: Bellco Glass, Inc. manufactures laboratory glassware and equipment. We deal with convection ovens, shakers and platform trays. The hotplate stirrers have a temperature range up to +380°C, and a frequency of 100 to 1500 rpm. They have ceramic coated heating surface that is resistant to chemicals. The 1P PTFE magnetic stirrer has two operating modes, namely continuous and alternating. The continuous mode offers unidirectional, user-selectable stirring speeds of 50-800 rpm, while the alternating mode reverses the direction of stir bar rotation according to a user selectable time period of 1-8 seconds.