Dear Sir, We want to purchase HIGH SPEED FLOOR MODEL REFRIGRATED CENTRIFUGE, the specifation are us follows. Maximum speed : 30000 rpm or more Maximum g force : 100,000 x g or more Control and Display : microprocessor with Digital display Speed control Accuracy : +/- 10 of set speed Temprature Range : 0 D to 40 C Temprature control : +/- 2 D c of set tempratureAcceleration/Decelerations Rates : upto twelve or more rates refrigeration system : Non CFC Refrigeration technology Capacity : 4 litres or more Sound level :