This 17mm white test tube peg rack is manufactured of filled polypropylene for excellent chemical resistance. Rack holds 50 sample collection tubes reaction tubes or similar-diameter tubes in an 5 x 10 array. It will not float in a water bath. Rack can be used to dry inverted tubes and can also be used to hold and dry electrophoresis and chromatography plates. Autoclavable. Material: filled polypropylene. Capacity: 50 tubes. Tube size: 14-17mm. Array: 5 x 10. Dimensions (L x W x H): 187 x 105 x 70mm. Color: white. 2/Pack; 8/Case. Nalgene® #: 5977-0017.