Which hoses do you recommend to connect a circulator to a jacketed vessel? If you are connecting a Huber Unistat or bath unit to a jacketed lab reactor such as Reactor-Ready, for almost all applications we recommend the insulated Huber hoses. For most hose sizes, you can choose between: Metal-inner hoses PTFE-inner hoses In terms of which hose size (M16, M24 or M30), consider the hose connections on the Huber unit and on the reactor and select a hose of the same size. For example, Reactor-Ready is M24. If you use it with a Unistat 405, this is also M24, so you would use M24 hoses. If you chose a Ministat 230, this is M16, so you would use M16 or M24 hoses with Reactor-Ready, with a size adapter where the size changes (described in further detail in a separate FAQ entry – search for ‘size adapter’). Determine the length of hoses you require, by considering where the Huber unit will be located relative to the jacketed lab reactor.