Discard any centrifuge tubes that have cracks in them

centrifuge pre cooled state, the centrifuge lid must be closed, after centrifugation turned out to be inverted in the experimental stage, dry the cavity more than water, the centrifuge lid is open. II. turned to when the transfer head covered in the pre cooling can be placed in the centrifuge platform, or placed in the experimental stage, do not tighten the float is not turned on, because once the errors start, turn skull will fly out, causing the accident! III. turn after tightening bonnet must use the touch of a finger and turned to whether the gap between the switch cover and, if re opened the gap to tighten the screw until the confirmation before starting the centrifuge seamless. IV. In the centrifuge process, the operator shall not leave the centrifuge chamber, in the event of unusual circumstances the operator can not turn off the power POWER, according to STOP. Fill in the pre cooling centrifuge before use records.