This full-size Unwire™ test tube rack securely holds a full load of seventy-two 13mm test tubes or centrifuge tubes in a 6 x 12 array. Molded in bright white acetal plastic with Resmer™ manufacturing technology which makes this rack keep its bright color longer. Useful in a wide temperature range with good chemical resistance. Autoclavable. Color: bright white. Material: acetal plastic. Dimensions (L x W x H): 200 x 102 x 57mm. Tube diameter: 13mm. Array: 6 x 12. 1/Pack; 8/Case. Nalgene® #: 5970-0013.