1ml Serological Pipette with 0.4ml negative graduation, 1/100 ml graduations, Sterile, 20 per bulk bag, 1000/pk, 3000/cs - 324002Bulk Packed 1000 pk, 3000 cs Made from high clarity polystyrene. Non pyrogenic, non cytotoxic and non hemolytic. Free from RNase and DNase enzymes. E Beam Sterilized. Volumetric accuracy of 2% Negative graduations to accommodate additional working volume. Polyolefin fiber filter helps to reduce contamination. Colored bands on the edges help decipher pipettes of different volumes.