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STUDY DESCRIPTION
Study Information
Study Title
Chloride in Milk, Milk Powder, Whey Powder, Infant Formula and Adult
Nutritionals Potentiometric titration.
AOAC First Action 2016.03: Multi-Laboratory Study.
This method is a combination of AOAC 2015.07 and AOAC 2015.08 in
collaboration with CIAQ.
Study
Objective
The objective of the study was to validate the current method (AOAC First
Action 2016.03) by determining its precision figures (repeatability and
reproducibility) through a multi-laboratory testing (MLT). This is mandatory to
finalize the work in progress and go forward to obtain Final Action status.
Study
Directors
Greg Jaudzems
Nestlé Quality Assurance Center
6625 Eiterman Road
Dublin, OH 43017
USA
Phone (direct):
+1 614.525.5357
E-mail:
greg.jaudzems@us.nestle.comAuthor: AOAC 2015.08
Fengxia Zhang
Chinese Academy of Inspection and
Quarantine Comprehensive Test Center
Beijing, 100123
China
Author: AOAC 2015.07
Study Monitor
Liaison with SPIFAN/AOAC (Official Methods Board): TDB
Study
Description
The study was divided in two parts: method set up and qualification of
participants (part 1) and multi-laboratory test participation (part 2).
Part 1: method set up and qualification of participants
Each participating laboratory was asked to analyze two practice samples using
the method provided in the protocol and report the results to the Study Director
within the required timelines (6 weeks after receipt). Results within a range of
expected levels qualified the laboratory for the second part of the study.
Part 2: Multi-Laboratory Test participation
Each qualified laboratory received fifty (25 blind duplicates) samples to be
analyzed using the method provided in the protocol. The laboratory was asked
to analyze them on two different days. Each sample was assigned to either
day 1 or day 2. The results were submitted to the Study Director for evaluation.
Continued on next page
2016.03 (APRIL 2017) - MTE-01/03
MLT REPORT
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