Antimicrobial Preservative Effectiveness Challenge Test against Escherichia coli
- Product Code: 253897
Microbial Challenge Test for testing the effectiveness of preservatives used in formulas. To ensure that it is effective enough to control infection using ISO 11930.
description Sample Requirement
100 g
insert_drive_file Report of Previously Tested Sample
timeline Service Steps
| Step | Procedure | Expected Result |
|---|---|---|
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1
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Tryptic Soy... |
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Preparation of the media |
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2
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Bacteria: Escherichia... |
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Test Microorganism |
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3
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Prepare a... |
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Preparation of the inoculum (N) |
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4
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Day 0: Inoculation & Calculation of N0 |
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5
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At each... |
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Day 7, 14, and 28: Sampling & Enumeration |
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6
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Incubate plates:... |
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Colony counts for log reduction calculation. |
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7
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To evaluate... |
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Calculation of Log Reduction (Rx) |
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8
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At 0,... |
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Log10 reductions: Criteria A (no increase 7d fungi/bact, ≥3log 14d) or B (≤0.5log 7d, ≥3log 28d). |
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9
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Include sterility... |
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Controls pass (no growth in sterility, recovery >70% in neutralizer). |
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