The 21052 3 ml cylindrical, 11,5x55 mm Test tube without rim, in polystyrene. The 20151 3 ml cylindrical, 11x70 mm, without rim in polystyrene is available in a bag of 250 pieces. The 21054 5 ml cylindrical 12x75 mmtest tube is available without rim and in a bad of 250 pieces. The 21054B 5 ml cylindrical 12x75 mm test tube is available without rim in polystyrene and in a bag of 250 pieces. The 21050 5 ml cylindrical 13x75 mm without rim in polystyrene and in a bag of 250 pieces. The 21050B 5 ml cylindrical 13x75 mm without rim in polystyrene and available in a bulk order. The 21030 7 ml cylindrical 13x100 mm without rim in polystyrene. The 21075 10 ml cylindrical 16x100 mm graduated without rim in polystyrene. The 21076 16x100 mm test tube graduated without rim in polystyrene.