Water Filter Cartridges features: The pipette tips conforms to the ergonomic principle: comfortable hand feel, suction and liquid discharge operation with gentle force, avoid repetitive muscle strain, and also small withdrawal force. Therefore, theyre convenient to be used. Features Material: Plastic High finish inner wall, caliber specification, with the migration device with excellent Designed for transferring liquids in the lab, school, home DIY experiments and more Pipette tips are particularly suitable for PCR and aerosol contamination experiments Its usually used in cell culture, cytology, molecular biology and the migration of radioactive samples Filter for high density material, which can effectively prevent cross pollution-free, maximum protection of the users.