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WEEKLY BACTERIA
SAMPLING:
Sample Retention for Verification
When submitting samples for weekly bacteria analysis, the IBWA's latest
model code revision outlines the following proceedures.
All IBWA members should be pulling five bottles from the same batch or
production code. One bottle should be analyzed for TC and SPC. The other
four bottles should be held until confirmation that coliform and e.Coli are
absent.
If coliform and/or e.Coli are detected in the initial sample, additional
samples should be taken from each of the four retainer bottles for analysis
of coliform and e.Coli.
This procedure should be followed on samples analyzed by your in-house
analyst as well as samples you send to an outside laboratory.
The purpose of the four retainer samples is to allow bottling companies
adequate documentation in the event of sample collection or analytical error
resulting in false positive results.
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