Sterile serological pipettes manufactured in virgin polystyrene, graduated. Non-dripping tip for pipette precision. Clear black graduations with easy-to-read scale markings guarantee maximum an accuracy of ±2%. Descending & ascending graduations to help pipetting and negative graduation for extra capacity. Supplied with a cotton plug for protection against the suction of liquid into the pipetting device. Pipettes and packaging are color coded to simplify identification. Individually wrapped in paper/plastic peel-pack: peel for easy opening. Sterile by irradiation. Latex free, certified non-pyrogenic, not cytotoxic devices.