Robust aluminium top plate. Flashing Hot warning light to warn when top plate is too hot to touch. Independent safety circuit to protect against overheating. Powerful stirring action up to 1500rpm and volumes of up to 15L Ideal for handling large vessels. Fitting for retort rod and supplied complete with 2mm x 25mm PTFE coated stir bars. Model SB302 has a robust aluminium/silicon alloy top plate. The very good heat transmission of this material gives rapid heating and ensures even temperature distribution across the whole of the plate. With BioCote; silver based; antimicrobial protection.