Micro December 2018
SUMMARY OF COMMENTS OMAMAN‐46: Enumeration of E. coli and Coliform
1. Is this method scientifically and technically sound?
ER 1 ER 2 ER 3 ER 4 ER 5 ER 6 ER 7 ER 8 ER 9 ER 1 ER 2 ER 3 ER 4 ER 5 ER 6 ER 7 ER 8 ER 9 ER 1 ER 2 ER 3 ER 4 ER 5
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Yes 2. Have sufficient controls been used, including those required to calculate the rate of false‐positive and false‐negative results where appropriate?
Yes 3. Is sufficient information included for system suitability determination and product performance or acceptance testing?
Yes Yes Yes Yes
No, Both on page 7 of the manuscript (page 51 of the book) and on page 1 of the product instructions it is mentioned that a few strains of Shigella, Salmonella, Enterobacter, Citrobacter, and Klebsiella can produce beta‐glucuronidase. It was considered by 3M the incorporation of some confirmation test for E coli? On page 7 ( page 51 of the book) "section D Sample preparation", line 26: it is mentioned a 42°C +/‐ 1 °C incubation temperature, is this temperature for fecal coliforms? if it is so, should it be 44.5 °C?
ER 6 ER 7 ER 8 ER 9
Yes Yes Yes
Yes 4. Are the conclusions statements valid based upon data presented?
ER 1
Yes
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