Key Features Large Capacity: The centrifuge can hold six tubes, each with a capacity of 0.004gal. It can meet the need for simultaneous centrifugation of large volumes of mixtures and improve the working efficiency. Low Noise Level: This centrifuge features a DC motor that produces a lower noise level of no more than 60db during operation, creating a comfortable and quiet working environment for you. Small Size: Its small size, which takes up a desktop area of only 9.1*10.2in, allows it to be placed on most desktops without taking up much space. Adjustable Speed Knob: This machine has a knob to set the speed(0-4000rpm/min), so you can choose your desired speed within the set range to separate the different liquids from the solid particles or the liquid mixture of different densities. Adjustable Time Knob: It has a knob to set the time, so you can choose your desired time within the time range(0~60min) to achieve different levels of separation. Alarm Design: This centrifuge is equipped with an alarm to remind you when the set centrifugal time is over, which is convenient for you to keep track of its progress. Application This instrument is widely used in hospitals, chemistry, and biochemistry laboratories for qualitative analysis of serum, plasma, immune, etc. How to Operate 1.Turn on the cover. 2.Put the simple into the rotors. 3.Press the power button. 4.Set the time first, then set the speed. When you hear a beep reminder, then set the time. It will make a beep when just in time. 5.Set the time and speed to "0". Specification Material: ABS Color: White Model: 900-2 Rated Voltage: AC220V Fuse: 10A Total Instrument Power: 30W Max. Speed: 4000rpm Speed Control: Knob with Infinitely Variable Speed Control Motor: Brushed Motor Timing: 0-60 min Centrifugal Force: 2086xg Volume: 6*20ml/6*0.004gal Noise: 60dB Vibration Coefficient: < 0.6 mm/s Product Size: 23*25.8*17cm/9.1*10.2*6.7inch Packing Size: 29*27*20cm/11.41*10.62*7.87in Gross Machine Weight: 1.7kg/3.74lbs Package Included 1* Centrifuge 1* English User Manual Notes 1.Before you are going to stop the machine, you should adjust the governor to "0" first.