AOAC ERP MICRO AUGUST 2018

OMAMAN-44 A: Collaborative Study Manuscript Expert Review Panel Use Only August 2018

Pre-collaborative and Collaborative Report Peel Plate EB

Table 9. Interlaboratory Study Results of Peel Plate EB vs. ISO 21528-1 & ISO 21528-2 Peel Plate EB ISO 21528-1 & ISO 21528-2 Difference of Means d N a s r b s R c Lot N s r s R

Difference of Means e 95% LCL, UCL 0.00, 0.00 -0.31, -0.01 0.05, 0.25

Mean Log 10 CFU/g

Mean Log 10 CFU/g

Matrix

Lot

Powdered Infant Formula with Probiotics 24 Hour Incubation Powdered Infant Formula with Probiotics 48 Hour Incubation

11 0.000 11 0.890 11 2.453

0.00 0.33 0.20

0.00 0.45 0.26

11 0.000 11 1.051 11 2.305

0.00 0.18 0.27

0.00 0.39 0.27

0.00 -0.16 0.15

Uninoculated

Uninoculated

Low

Low

Medium

Medium

High

11 3.388

0.12

0.18

High

11 3.211

0.10

0.20

0.18

0.11, 0.25

11 0.000 11 0.903 11 2.467

0.00 0.34 0.25

0.00 0.45 0.25

11 0.000 11 1.051 11 2.305

0.00 0.18 0.27

0.00 0.39 0.27

0.00 -0.15 0.16

0.00, 0.00 -0.31, 0.1 0.06, 0.26

Uninoculated

Uninoculated

Low

Low

Medium

Medium

High

11 3.395

0.11

0.17

High

11 3.211

0.10

0.20

0.18

0.12, 0.25

a Number of collaborators that reported complete results. b s r – Repeatability. c s R – Reproducibility. d ADifference of means <0.5 indicates no statistical significant difference between methods. e 95% Lower and Upper Confidence Limits.

ERP Use Only

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