The cover of general lab reactor hatche: related magnetic stirrer for stirring hatch , needle valve is equipped for gas-phase let gas inlet and outlet and vacuumize,needle valve is equipped for
liquid-phase hatch , bottom is inserted with pipe to sample or stop feeding materials in reation process, thread is equipped for solid feeding hatch(instruction:0.1-0.5L,no hatch) , nozzle is
equipped for entrance of cooling coil to lower temperature for reaction materials (instruction:0.1-0.5L,no hatch) ,voltage meter anti-explosion slice is equipped for anti-explosion voltage meter to
protect pipeline and platinum resistance, related valve for outlet can be added according to requests of users.