Test tube peg racks, filled PP. Blue racks. Tube size 14-17 mm. Rack size: (lxwxd) 187x105x70mm Array 5 x10mm Suitable for sample collection tubes, reaction tubes or similar-diameter tubes. Will not float in a water bath. Can be used to dry inverted tubes. Also can be used to hold and dry electrophoresis and chromatography plates. Chemical resistant. (Autoclavable)