Features1. Suit for Lab， testing chemistry， microbiology and all work for biology or sciencetific research etc.2. This transfer pipettes made from low density polyethylene. And it graduated 3ml.3. They're clean， chemically inert and non-toxic for the environment.4. Easy to absorb the liquid， please refer to the pictures.How to use?You can hold the pipette and push the top of the pipette to absorb the liquid which you want. and you can release the top of the pipette and put the liquid down on the lebes when you work with the microscope.Specifications:Condition: New and high qualityMaterial: Low density polyethyleneColor: Showed as the picturesSize: 15.5cm/ 6.1''Diameter: 1.2cm/ 0.47''Volume: 3mlNotice: Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before you bid.Package Included:100 x Transfer Pipettes