500 pack of transfer pipettes graduated up to 3 mL with additional 4mL capacity in bulb. Graduation: 0.5 mL. Made of acid-alkaline resistant polyethylene these pipettes are ideal for transferring and dispensing liquids and are clear for easy visual access. For use in all types of testing laboratories chemistry microbiology oils fragrances etc. Non-Sterile. Disposable single use only.