AOAC SPIFAN Nutrients ERP Review (March 14, 2019)

2016.13 (Jan. 2019) Carot-02 MLT Report FOR ERP USE ONLY DO NOT DISTRIBUTE

Table 10. Precision data for total β-carotene in fortified formulas

Precision parameter

Symbol

A

B

C

D

E

F

Total number of laboratories Total number of replicates

p n

10

10

10 10

10

10

10

9 1

8 2

9 1

9 1

8 2

Number of outliers

-

0

Grand mean (µg/100 g) Repeatability SD (µg/100 g) Reproducibility SD (µg/100 g) Repeatability RSD (%) SMPR repeatability limit Reproducibility RSD (%) SMPR reproducibility limit

x̅

10.9 13.5 15.3 18.6 20.3 25.1 0.3 0.8 0.7 0.8 0.4 0.3 1.2 1.1 2.1 1.9 2.5 2.2 2.3 6.0 4.5 4.5 1.8 1.1

SD r SD R

RSD r

-

8

8

8

8

8

8

RSD R 11.3 8.5 13.7 10.4 12.2 8.8

-

15

15

15

15

15

15

Horwitz ratio HorRat 0.51 0.39 0.65 0.50 0.60 0.45 Sample A = NIST SRM 1869, B = Milk-based toddler formula powder, C = Milk-based infant formula powder, D = Soy-based infant formula powder, E = Milk-based infant formula powder, F = Infant formula ready-to-feed

Figure 17. HorRat values for total β-carotene in fortified samples. Sample A = NIST SRM 1869, B = Milk-based toddler formula powder, C = Milk-based infant formula powder, D = Soy-based infant formula powder, E = Milk-based infant formula powder, F = Infant formula ready-to-feed

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