Kimax® Disposable Color Coded Plugged Sterile Serological Pipets have a uniform pulled tip and are clean, plugged, sterile and ready for use. Calibrated to deliver to the tip, with two rings near the top denoting that the small amount remaining in the tip after free delivery has ceased must be blown out and added to the main volume delivered. Provided with "negative" graduations to increase the versatility of the pipet. Made from borosilicate glass in compliance with ASTM Specification E438, Type I, Class B glass requirements. Sizes 1 and 2 mL are packaged 25 pieces per bag, sizes 5 and 10 mL are 10 pieces per bag. Designed from ASTM Specification E714.