Polypropylene test tube racks, suitable for holding test tubes or boiling tubes. These good quality but economically priced racks are resistant to many chemicals and are autoclavable at 121oC. Supplied flat-packed for protection and ease of transport. Easy self-assembly. Dimensions: 230 x 100 x 60 mm approx. (l x w x h). Test tube sizes given refer to the outer diameters.