74-75 / 123
Table 2: Precision results for vitamin D fortified samples
Seq.
Precision
Symbol
NIST1849a CRM
IF powder, p/h soy-
based
Infant elemental
powder
Adult nutritional
RTF – high protein
Vitamin D
3
Vitamin D
3
Vitamin D
3
Vitamin D
3
KGSZ273/LTCT316
SWUO667/MYHK654 ECHL425/UOPM297 FPTE312/DOMY545
1
Total number of laboratories
p
9
9
9
9
2
Total number of replicates
Sum(n(L))
36
18
18
18
3
Overall mean of all data (grand mean)
x
10.2 µg hg
-1
8.6 µg hg
-1
8.2 µg hg
-1
1.0 µg hg
-1
4
Repeatability standard deviation
SD
r
0.3 µg hg
-1
0.3 µg hg
-1
0.2 µg hg
-1
0.0 µg hg
-1
5
Reproducibility standard deviation
SD
R
0.7 µg hg
-1
0.8 µg hg
-1
0.7 µg hg
-1
0.1 µg hg
-1
6
SMPR Repeatability limit
11.0%
11.0%
11.0%
11.0%
7
Repeatability RSD
RSD
r
%
3.2%
3.9%
2.3%
5.1%
8
SMPR Reproducibility limit
15.0%
15.0%
15.0%
15.0%
9
Reproducibility RSD
RSD
R
%
7.2%
8.8%
8.2%
12.4%
10
Horwitz Ratio
HorRat
R
0.3
0.4
0.3
0.4
Seq.
Precision
Symbol
Soy-based IF
Child elemental
powder
Infant formula RTF
– milk-based
Adult nutritional
RTF – high fat
Vitamin D
3
Vitamin D
3
Vitamin D
3
Vitamin D
3
TJHR217/OACN211
NSRB999/JSDT587
XKIP216/HYJU890
DYLB360/ZMQM883
1
Total number of laboratories
p
9
9
9
9
2
Total number of replicates
Sum(n(L))
18
18
18
18
3
Overall mean of all data (grand mean)
x
9.9 µg hg
-1
8.3 µg hg
-1
0.7 µg hg
-1
1.3 µg hg
-1
4
Repeatability standard deviation
SD
r
0.4 µg hg
-1
0.4 µg hg
-1
0.0 µg hg
-1
0.0 µg hg
-1
5
Reproducibility standard deviation
SD
R
1.1 µg hg
-1
0.6 µg hg
-1
0.1 µg hg
-1
0.1 µg hg
-1
6
SMPR Repeatability limit
11.0%
11.0%
11.0%
11.0%
7
Repeatability RSD
RSD
r
%
4.2%
4.3%
3.6%
3.4%
8
SMPR Reproducibility limit
15.0%
15.0%
15.0%
15.0%
9
Reproducibility RSD
RSD
R
%
10.9%
7.7%
11.4%
6.9%
10
Horwitz Ratio
HorRat
R
0.5
0.3
0.3
0.2
2016.05 (FEBRUARY 2017) VITD-18
MLT REPORT
FOR ERP USE ONLY
DO NOT DISTRIBUTE