AXIO | Proficiency Testing schemes 2025
Histogram
3
2
1
0
z score range
Distribution Graph
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
ICP-MS
ICP-OES
AAS
Other
Quantitative Methodology Summary
Method
Results
Unit
Median Robust SD
Range
Sat % Questionable% Unsat %
Number
Excluded % of Total
AAS
1
0
6
µg/g 0.857
0.0000 0.857 to 0.857 100.0 0.0
0.0
ICP-MS
10
1 1
59 29
µg/g 0.859 0.0682 0.775 to 0.987 90.0 0.0 µg/g 0.798 0.0363 0.766 to 0.860 100.0 0.0 µg/g 0.885 0.0000 0.885 to 0.885 100.0 0.0
10.0
ICP-OES
5
0.0 0.0
Other
1
0
6
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