This is a 24-place blood bank cross-match rack. It holds 4 of the 16mm sample tubes and 20 of the 10mm cross-match tubes. No on-rack labeling is supplied. The rack is manufactured of clear acrylic shelves with white bases and sides. It is used for typing, screening, and other blood bank applications. It is also used for blood donor processing. It holds donor sample tubes as well as tubes for donor serum and cell suspension, ABO, Rh, and antibody grouping and screening. 12/Case. Dynalon® #: 159565-1.