Number of the zone Description of the zone \(L_{i}\) [m] \(d_{w,i}\)[m]
1 the pipe that connects the valves 20.0×10-3 1.5875×10-3
2a sample tube – part of larger diameter 205.7×10-3 7.6500×10-3
2b sample tube – part of smaller diameter 235.0×10-3 1.5875×10-3
3 the pipe that connects the valve to TCD detector 700.9×10-3 1.5875×10-3