It can be filled liquid sample to the maximum capacity and matched with various racks.High sealing with 2 claws on the tube prevents sample leakage in the vapor phase of liquid nitrogen. WE CAN SUPPLY AND INSTALL ANYWHERE IN NIGERIA OFFICES IN LAGOS, ABUJA, PORT HARCOURT AND BENIN CITY Please CALL: 0907-643-3020, 0904-936-7703 WhatsApp: https://wa.me/2349076433020 Email: info (AT) scantrikmedicalsupplies.com Web: www.scantrikmedicalsupplies.com/products