50ml sterile polypropylene tubes with free-standing skirted bases. These tubes can be used as specimen tubes or in place of test tubes or small measuring cylinders and come with blue graduations for accurate measuring. They also include a white write-on strip, an internal conical base and a screw cap. Dimensions: 30 x 115 mm (dia. x h). Supplied as a pack of 25 sterile tubes, each 50ml capacity.