Table 2.

Repeatability and reproducibility tests

Sampler string	Repeatability (mean FID counts)	RSD (%)	N	Reproducibility (mean FID counts)	RSD (%)	N
1	3690.25	2.26	4	3706.17	0.63	3
2	3664.75	0.74	4	3664.92	0.89	3
3	3642.00	1.58	4	3674.17	0.83	3
4	3688.75	1.90	4	3661.33	2.15	3
Average	3671.44	0.62	4	3676.65	0.56	4

Tests of the sampler strings with FID counts of repeated samples of 1.5 l air with 0.22 nmol mol⁻¹ Δ²-carene

RSD relative standard deviation, N number of repetitions