AOAC SPIFAN Nutrients ERP Review (March 14, 2019)

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

Table 9. Precision data for all- trans -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

8 2

8 2

9 1

9 1

9 1

8 2

Number of outliers

-

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

6.9 7.7 10.3 11.7 14.1 15.9 0.2 0.3 0.2 0.5 0.3 0.3 0.5 0.9 1.6 1.4 1.8 1.5 2.9 4.2 2.0 4.1 2.2 2.0

SD r SD R

RSD r

-

8

8

8

8

8

8

RSD R

7.4 11.1 15.3 11.8 12.5 9.4

-

15

15

15

15

15

15

Horwitz ratio HorRat 0.31 0.47 0.68 0.53 0.58 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 16. HorRat values for all- trans -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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