ISO 10370:2014 pdf free

ISO 10370:2014 pdf free.Petroleum products – Determination of carbon residue – Micro method
Coking oven, comprising a circular heating chamber approximately 85 mm diameter by 100 mm deep for top-loading, capable of heating to 500 °C at a rate of between 10 °C and 40 °C per min, with exhaust port of 13 mm inside diameter for nitrogen purge of oven chamber (inlet near top, exhaust at bottom centre), with thermocouple sensor located in oven chamber next to but not touching sample vials,and with lid capable of sealing out air.
The condensate outlet leads into a short vertical section where most of the vapour condenses and falls into a removable trap located directly below the oven. A schematic diagram is given in Figure 1.
Sample vial holder, comprising a cylindrical aluminium block approximately 76 mm diameter by 17 mm thick with 12 evenly spaced holes (for vials) each 13 mm diameter by 13 mm deep.The holes shall be arranged in a circular pattern approximately 3 mm from the perimeter. The holder shall have legs 6 mm long with guides to centre in the oven chamber, and an index mark on the side to use as position reference. A typical holder is shown in Figure 2.
Thoroughly stir the sample to be tested, first warming if necessary to reduce its viscosity. If the samples are in liquid form, transfer directly to the vials (6.1) using a rod or syringe. If the samples are solid materials, they shall either be heated, or frozen with liquid nitrogen and then shattered to provide manageable pieces.
Ensure that the 4 ml vials (6.1) are clean and stored in a desiccator (without desiccant) before use. Set up the distillation as described in ISO 3405 using a clean 125 ml flask with no carbon deposits and add six glass or ceramic ‘anti bumping’ beads (1,5 mm to 2,5 mm diameter is recommended) to aid the mixing of residue as well as reducing bumping.
The thermometer may be omitted and replaced with a snug fitting, well rolled cork or silicone rubber stopper because it is the volume of distillate collected that is critical not the temperature of distillation. For an automatic unit, the temperature recording device may be necessary to allow the instrument to operate.ISO 10370 pdf free download.