AOAC Methods for Review in Codex STAN 234_11-2018

Table 9. Results for determination of phosphorus ( µ g/g) by AOAC Official Method 986.24 in soy, whey, and enteral formulae AOAC Official Methods Listed in CXS 234 for Milk and Milk Products 98

Youden pair

Youden pair

Enteral sample 7

RTF soy sample 4 a

Soy powder sample 1 b

Soy powder sample 5 b

RTF soy sample 6

RTF soy sample 2 a

Whey powder sample 3

Laboratory

1 2 3 4 5 6 7 8

541 538 527 536 580 d — d 522 544

491 552 518 528 510

504 538 528 539 570

364 488 507 415 480

4160 3853 3920 3870 4000

4130 3810 3740 3810 3800

2450 2006

c 3980 c

1900 2000

—

—

—

—

—

—

510 516

525 538

433 443

4010 4135

3680 3790

2040 2090

Mean e

526 a

3908 b

2350, 2081 f

541

447

15.6 a

94 b

s r

e

, % e

3.0 a

2.4 b

RSD r

19.3 a

133 b

739, 191 f

s R

e

18.8

49 11

, % e

3.7 a

3.4 b

31, 9 f

RSD R

3.5

a Youden closely matched pairs. b Youden closely matched pairs. c Grubb’s outlier. d —, laboratory 6 did not assay for phosphorus. e 7 laboratories. f If Grubb’s outlier excluded (exclusion would exceed 2/9 IUPAC Guidelines).

10/9/2018