Screw Cap Tubes, Centrifugal Tubes Centrifugal Tubes 15 ml and 50 ml Centrifugal tubes Skirted/Stand-able bottom Sterile Non-Sterile no-Skirted bottom Sterile Non-sterile Conical Tubes 15 ml and 50 ml Conical bottom tubes Skirted/Stand-able bottom Sterile Non-Sterile no-Skirted bottom Sterile Non-sterile Round Bottom Tubes 12 ml Round bottom tubes Skirted/Stand-able bottom Sterile Non-sterile 12 ml Round bottom - Sterile Culture tubes no-Skirted bottom Sterile Racks for tubes Universal racks Set of mixes Combi racks Universal test tube racks Assembling rack Acetal polymer racks Single use racks Combi rack height 128 Polypropylene rack 1×1 height 45 1×1 height 70 9×9 height 70 7×7 height 80 9×9 height 80 7×7 height 96 9×9 height 96 5×5 round hole height 105 5×5 round hole height 128 Aluminum racks Stainless steel racks Stainless steel racks