Good liquid transferring tool dropper,which is perfect for collecting and dispensing liquid The rubber head of the glass pipette is removable which can remove to clean by water We respect and cherish each customer, if you have any questions whether before or after ordering, please feel free to contact us, we make every reasonable effort to supply service that satisfy your requirements. The scale line of the glass dropper will make it be convenient for you to have a clear view of contents The graduation of the glass dropper is very precise, clear and professional, the calibration marks are easily readable