ISO 27608:2010(E)
6
© ISO 2010 – All rights reserved
Table A.1 — Results of a collaborative trial
Group A — Instruments PFX 880/L, PFX 950 or PFX 995
Sample
A B C
Colour
Red Yellow
Red Yellow Red Yellow
Number of participating laboratories, N
9 9 5 5 10
10
Number of laboratories retained after eliminating outliers, n
7 8 5 5 10 9
Number of individual test results in all labs on each sample
14
16
10
10
20
18
Mean,
µ
0,07 0,20 6,21 70,1 3,46 42,8
Repeatability standard deviation, s
r
0,00 0,09 0,51 0,0 0,07 0,0
Repeatability coefficient of variation, C
V
, r
,
%
0,0 46,8 8,2 0,0 2,2 0,0
Repeatability limit, r (s
r
× 2,8)
0,00 0,26 1,42 0,0 0,21 0,0
Reproducibility standard deviation, s
R
0,05 0,18 1,81 0,1 0,89 10,8
Reproducibility coefficient of variation, C
V
, R
,
%
68,3 89,8 29,1 0,2 25,8 25,3
Reproducibility limit, R (s
R
× 2,8)
0,14 0,50 5,06 0,4 2,49 30,3
Group B — Instruments LICO 200, LICO 300, LICO 400 or LICO 500
Sample
A B C
Colour
Red Yellow
Red Yellow Red Yellow
Number of participating laboratories, N
23 23 21 20 24 24
Number of laboratories retained after eliminating outliers, n
23 23 21 20 19 20
Number of individual test results in all labs on each sample
46
46
42
40
38
40
Mean,
µ
0,11 0,22 12,7 89,4 2,75 36,6
Repeatability standard deviation, s
r
0,02 0,06 0,1 0,0 0,13 2,3
Repeatability coefficient of variation, C
V
, r
,
%
18,5
26,0 1,0 0,0 4,6 6,2
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