Please check the size carefully in picture 2,make sure that the item fits your needs.

Sold as 2pcs 10ml thick glass graduated dropper pipettes with blue rubber caps
All the pipettes are individually measured and then marked,clear orange scale,easy to read.
Accuracy is ensured between any two readings, because of uniformity of bore. The pipettes can be autoclaved and if necessary can be flamed for sterilization.
Ideal dropper for classical pipettes made of glass and plastic pipettes Ideal replacement
Fit for laboratory experiment liquid transfering.

Because the items of the listing are made of glass and rubber material. During the cutting process of glass products, debris and dust are generated. So customer may find dust on the glass pipette,it doesn't matter,just wash with water before use.The cap is made of rubber,we should keep it dry before use.