Corning gel-loading polypropylene pipet tips feature a flat 0.2mm thick capillary end that allows easy access into vertical and horizontal electrophoresis gels. . Please check our Technical Information Listing on our Technical Information Listing for our Pipet Tip Compatibility Guide for additional pipet tip fit information.---Working volume of 0.2-10uL-Designed for use with Gilson and other popular ultra-micropipettors-200 tips/rack-Nonsterile, certified RNase-/DNase-free, nonpyrogenic and trace metal-free. Product Details At-a-Glance Qty./Pk.:200 Qty./CS.:400 Volume Range:0.2-10 uL Tip Shape:Flat Tip Format:200 Tips/Rack Feature:Disposable Color:Natural Sterile:No Packaging:Rack