21 / 620
4
≤ 8
,2
Therefor no difference between the results has been demonstrated on a 95%
confidence level.
To compare our results with data on 1849A and 1845A published at the 2
nd.
Vita-
min conference in Copenhagen
2
the data has been evaluated with at t-test (un-
equal sample size, equal variance).
where
Using the zero hypotheses that no difference between the two data sets is ob-
served.
Sample: NIST SRM 1849A
Matrix: Infant/adult nutritional formula.
Species
Result
n Reference value
n
Comment
carnitine
158 ± 4 mg/kg
8 149 ± 1 mg/kg
20 Total carnitine
At 26 degrees of freedom the t
value of 2,0555 is critical for α=0,05
9
≥ 2
,1
The Zero hypotheses are rejected on a 95% confidence level. There is a signifi-
cant difference between the results.
The explanation is that alkaline hydrolysis is more efficient in hydrolysing the car-
2
Data presented at the 2
nd.
International vitamin conference in Copenhagen 2012.
Carn-06 - Validation Report
FOR ERP USE ONLY
DO NOT DISTRIBUTE