Polypropylene conical tube with 5mL (approx.) gradation lines and screw cap closure. Large writing area on the side of the tube for reliable labeling. 30mm OD x 115mm tall without cap. Can be used with FRC-40/LH-40 Rack Kit D30. Stable for centrifugation up to 19,500 x g. Operating temperature range from -86C to 100C.