Individually wrapped sterile pipettes Bi-directional (positive and negative) graduations are printed in bold easy-to-read ink Color coded stripes and packaging enable quick volume identification United Scientific serological pipettes feature black graduations for precise reading and accurate dispensing. Reverse graduations show volume removed or remaining on all pipettes larger than 1 mL. Negative graduations provide additional pipetting volume. Manufactured from transparent USP Class VI polystyrene and sterilized by gamma irradiation. Each lot is DNase, RNase, & Pyrogen free. Pipettes are individually wrapped in plastic/paper easy-to-peel packs. Manufactured to ASTM Standard Specification for Serological Pipettes E-934. Country of Manufacture China Safety Warning: Cancer and reproductive harm Product Dimensions 13'' x 9'' x 2'' UPC 840287238334