Diesel fuel in Australia is required to comply with the Australian Government regulations summarised in Table S1 (Orbital-Australia, 2010) which specifies the requirements concerning diesel fuel permitted for land based use in Australia during the period of measurement.
Table S1: Content data of Australian National Standard of diesel fuel
50 pS/m (Min) @ambient temp (all diesel held by a terminal or refinery for sale or distribution)
16 Oct 2002
0.460 mm (max) (all diesel containing less than 500ppm sulfur)
16 Oct 2002
The effect of the increased residence time due to the sample averaging reservoir on the measured NOx concentration, was tested by comparing the response of the NOx analyser to a range of NO challenge concentrations both upstream and downstream of the averaging reservoir while using the same total gas flow rate (0.057 L.s-1) through the reservoir as in the rail side measurements. The comparison showed that for concentrations in the range 0-0.4 ppm, there was no measurable decrease in concentration due to the passage of the sample through the 5.2 L, 1000 mm long cylindrical copper reservoir.