Corning® Universal Fit stack rack polypropylene pipet tips feature a stack of five racks (96 tips each) in a space-saving design. Please check our Technical Information Listing on our Pipet Tip Compatibility Guide for additional pipet tip fit information.---Graduated at the 10, 50 and 100µL volumes-96 tips/rack and 480 tips/stack-Beveled orifice helps ensure accurate fluid delivery.-Nonsterile and certified RNase-/DNase-free and nonpyrogenic.