Pipette and holder are used to transfer volatile liquids to test tubes, pipette having ground surface on inside of its nozzle which is closed by conical ground glass stopper and pipette holder allowing it to be emptied in one or more stages
摘要
<p>Pipette and holder (3) are used to transfer volatile liquids to test tubes (9). The pipette has a ground surface on the inside of its nozzle which is closed by a conical ground glass stopper (1). The pipette holder fits around it and allows it to be hung on the tube lip and emptied in one or more stages.</p>
