AOAC-RI ERP Book MICRO.pdf

3M Petrifilm RYM Collaborative Study

June 2014

OMA-2014-June-XXX

7.2.

Convert yeast/mold counts into logarithms for data analysis.

7.3.

Perform a one way analysis of variance (ANOVA) or a paired t-test to determine if

the mean of replicate samples at each contamination level for each matrix is not

different between the 3M Petrifilm RYM method and the reference methods.

7.4.

Calculate the repeatability (s

) of the 3M Petrifilm RYM method and the reference

methods by determining the mean of the logarithm (base 10) of the counts and the

standard deviation, s

for each contamination level of each matrix.

Appendices

8.1.

Instructions to Collaborators

8.2.

Data Report Forms

8.3.

Study Materials

8.4.

Study flow diagram

8.5.

Collaborator Information Sheet

8.6.

Collaborator Comment Form

8.7.

3M™

Petrifilm

™

Rapid Yeast and Mold Count Plate Instructions for Use

DRAFT DOCUMENT

AOAC Research Institute

Expert Review Panel Use Only

OMAMAN-16A/ Collaborative Study Protocol

ERP Use Only - December 2014