表 4.

实验室间的重复性限与再现性限测定结果

Parameter	Sample 1	Sample 2	Sample 3	Sample 4	Sample 5
Number of laboratories	4	4	4	4	4
Number of repeated determinations	3	3	3	3	3
Mean value/(mg/g)	3.71	6.69	10.40	14.20	26.20
Repeatability standard deviation/(mg/g)	0.07	0.16	0.16	0.19	0.25
r/%	1.89	2.44	1.83	1.37	0.96
Reproducibility standard deviation/(mg/g)	0.23	0.31	0.43	0.28	1.11
R/%	6.19	4.60	4.09	1.97	4.25