Incubation shaker CERTOMAT® CTplus can be stacked three units high and run fully independently without speed reduction of the upper units. Maximum capacity is six 5 Liter flasks. Doors opening to the front make it easy to transfer cultivation vessels from one unit to the other. The interior of the incubation chamber is made from stainless steel, glued with sealed seams, and can be easily kept clean. The stainless steel humidification pan can be taken out for autoclaving. Even the inspection light is sealed against the chamber. Incubation shaker CERTOMAT® CTplus features a central DCU controller unit for all process parameters operated by a touchscreen display. It is ready for connection to MFCS/win software for data acquisition and remote control via Ethernet. An analog-output for data documentation and a potential-free contact for connection to external alarm systems are available. The working parameters time, speed, temperature, illumination (option) and cooling (option) can be programmed, linear or incycles, in 20 programs, each consisting of 4 steps plus one pre-step. Safety features include visual and acoustic alarms, memory function for automatic re-start after power failure and recording of the time of any interruptions.