AOAC OMA# 2011.06 Final Action Review-OMB

2011.06 (September 2017)-Fol-22 MLT Report

FOR ERP USE ONLY DO NOT DISTRIBUTE

Table 4: Precision results for the AOAC SPIFAN MLT samples

Infant formula powder, partially

Infant formula powder, partially

Milk-based infant formula

SRM 1869a

Parameters

Symbol

Units

hydrolyzed milk-based KDOX966/ ATAN351

hydrolyzed soy-based SWUO667/ MYHK654

CULF358/ GBZC169

PTLO721/ GBZC169

Total number of laboratories Total number of replicates

11

10

11

11

p

22

20

22

33

Sum(n(L))

Overall mean of all data (grand mean) Repeatability standard deviation Reproducibility standard deviation Repeatability relative standard deviation Reproducibility relative standard deviation HORRAT value SMPR Repeatability Limit SMPR Reproducibility Limit HORRAT (Satisfactory Limit)

154.8

131.5

173.7

245.3

XBARBAR µ g/100g

8.1

5.6

11.5

14.9

µ g/100g

SD r

15.4

15.9

27.2

24.8

µ g/100g

SD R

5.3

4.2

6.6

6.1

RSD r

%

10.0 0.66

12.1

15.7

10.1

RSD R

%

0.79

1.06

0.72

HorRat R

7.0

7.0

7.0

7.0

RSD r

%

16.0

16.0

16.0

16.0

RSD R

%

0.5-2.0

0.5-2.0

0.5-2.0

0.5-2.0

HorRat R

Collaborative Study Report: Method AOAC 2011.06 (Folate by LC-MS/MS) 14