The large console Excella E25 incubator shaker and model E25R with added refrigeration accommodate test tubes or flasks up to 6 liters in a tightly-sealed growth chamber featuring a large viewing window for easy viewing of samples. A wide variety of platforms, clamps and test tube racks provide for unlimited flexibility. The Excella models E25 and E25R offer field calibration of temperature and speed through the microprocessor-controlled touch pad.