This 24-position autosampler sample rack features square holes, with side length of 25.2 mm, designed for 30 mL vials. Rugged racks are molded of autoclavable polypropylene. Footprint dimensions fit many different auto samplers. Each rack features end plates for labeling as well as numbered and lettered rows for tube identification. Assembly takes only seconds with fold up sides and end bars that lock into rack tops.