In a harmonized microbial limits test, while performing suitability of methods test, a lab dechnician counted an average of 95 colonies on the internal control plates and on the plates with diluted product $+10^{*}$ celsil he counted 68 cofonies. The technician in the lab is unsure as to Whether the product has passed or failed the suitability of methods test. How would you help the lab technician to make the right decision? Explain (2 marks)

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∻Answer∻ ⚹ The product has failed the suitability of methods test. ⚹ ∻Solution∻ ‖ a ⋮ Calculate the percentage recovery of the colonies on the plates with the diluted product: The percentage recovery is calculated using the formula $\frac{ ext{Number of colonies on product plate}}{ ext{Number of colonies on control plate}} imes 100\%$. ‖ ‖ b ⋮ Apply the acceptance criteria for the suitability of methods test: Typically, the recovery should be within 70-130% for the product to pass the test. ‖ ∻Key Concept∻ ⚹ Suitability of methods test in microbial limits testing ⚹ ∻Explanation∻ ⚹ The suitability of methods test ensures that the test method is capable of recovering microorganisms from the product at an acceptable level, usually within 70-130% of the control. ⚹◊How can the lab technician determine the pass or fail status of the product in the suitability of methods test based on the colony counts on the internal control plates and plates with diluted product?⍭ Generate me a similar question◊

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