Pipette Tip, Transport Tube, Syringe Filter manufacturer / supplier in China, offering 15ml Centrifuge Tube with Blue Seal Screw Cap. Pre-Assembled. Conical Bottom. Sterile, 15ml Centrifuge Tube with Blue Seal Screw Cap. Pre-Assembled. Conical Bottom. Non-Sterile, 15ml Centrifuge Tube with Blue Seal Screw Cap. Separate. Conical Bottom. Non-Sterile and so on.