Pal Surgical Works offers Centrifuge Tubes with Conical Bottom. Pal Surgical Works is an ISO 9001:2000 certified company. Centrifuge Tubes with Conical Bottom are available in two sizes: 15 ml. And 50 ml. Moulded in Polypropylene, these tubes are clear, strong and safe. Centrifuge Tubes with Conical Bottom are autoclavable tubes and are provided with printed graduations on the outer surface. The built in seal ring in the cap makes these tubes absolutely leak proof. These tubes can withstand forces up to 7500 x G and 12000xG for 15 ml. And 50 ml. Tubes respectively. These tubes are available in sterilized and non-sterilized form.