ISO 3405:2011 pdf download.Petroleum products - Determination of distillation characteristics at atmospheric pressure.
5.3.2 The condenser shall be made of seamless non-corrosive metal tubing. 560 mm 5 mm in length, with an outside diameter of 14 mm and a wall thickness of 0,8 mm to 0,9 mm, NOTE Brass or stainless steel are suitable mateñals
5.3.3 The condenser shall be set so that a length of 393 mm ± 3 mm 01 the tube is in contact with the cooling medium, with 50 mm ± 3 mm outside the coding bath at the upper end, and 114 mm ± 3 mm outside at the lower end. The portion of tube prnecting at the upper end shall be set at an angle of 75 to the vertical. The portion of the tube inside the cooling bath shall be either straight or bent in any suitable continuous smooth curve. The average gradient shall be 15 ± 1 with respect to the horizontal, and no 100mm section shall have a gradient outside the range of 15 ± 3. The pcoecbng lower portion of the condenser tube shall be curved downward for a length of 76 mm and the lower end cut oft at an acute angle. Provisions shall be made to enable the flow of distillate to run down the side of the receiving cylinder. Figure 4 gives an illustration of the lower end of the condenser tube.
The flow of distillate down the side of the graduated cylinder may be accomplished either by using a dnp deflector inserted in the receiver, or by having the downward length of the condenser tube curve slightly backwards so as to ensure contact with the wall of the receiving cylmder at a point 25 mm to 32 mm below the top of the receiving cylinder when it is in position to receive distillate.
5.3.4 The volume and design of the cooling bath will depend on the coolrng medium employed. The cooling capacity of the bath shall be adequate to maintain the required temperature for the desired condenser performance. A single cooling bath may be used for several condenser tubes.
5.3.3 The condenser shall be set so that a length of 393 mm ± 3 mm 01 the tube is in contact with the cooling medium, with 50 mm ± 3 mm outside the coding bath at the upper end, and 114 mm ± 3 mm outside at the lower end. The portion of tube prnecting at the upper end shall be set at an angle of 75 to the vertical. The portion of the tube inside the cooling bath shall be either straight or bent in any suitable continuous smooth curve. The average gradient shall be 15 ± 1 with respect to the horizontal, and no 100mm section shall have a gradient outside the range of 15 ± 3. The pcoecbng lower portion of the condenser tube shall be curved downward for a length of 76 mm and the lower end cut oft at an acute angle. Provisions shall be made to enable the flow of distillate to run down the side of the receiving cylinder. Figure 4 gives an illustration of the lower end of the condenser tube.
The flow of distillate down the side of the graduated cylinder may be accomplished either by using a dnp deflector inserted in the receiver, or by having the downward length of the condenser tube curve slightly backwards so as to ensure contact with the wall of the receiving cylmder at a point 25 mm to 32 mm below the top of the receiving cylinder when it is in position to receive distillate.
5.3.4 The volume and design of the cooling bath will depend on the coolrng medium employed. The cooling capacity of the bath shall be adequate to maintain the required temperature for the desired condenser performance. A single cooling bath may be used for several condenser tubes.
