Test your knowledge of pharmaceutical QC microbiology: USP <61> microbial enumeration, <62> specified microorganisms, <71> sterility, growth promotion testing, serial dilution and acceptance criteria. There are 15 questions. Click an answer to see whether you are right, with a short explanation.

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1.Under USP <61>, the TAMC is determined on Soybean-Casein Digest Agar incubated at:

2.Which medium is used for the TYMC?

3.For the growth-promoting test, each organism's inoculum should be:

4.A solid medium passes the growth promotion test when recovery is:

5.When counting TYMC plates under USP <61>, use the plates with the highest number of colonies below:

6.For a non-aqueous oral preparation, the TAMC criterion of 10^3 CFU/g means a maximum acceptable count of:

7.ATCC 14028, used in the USP <62> test for Salmonella, is:

8.Which medium is used in the sterility test (USP <71>) mainly for anaerobic and aerobic bacteria?

9.The sterility test media are incubated for not less than:

10.Which organism is used for the growth promotion test of Sabouraud Dextrose Agar for the TYMC?

11.Transferring 1 mL of sample into 9 mL of diluent gives a dilution of:

12.1 mL of a 1:10 dilution is pour-plated in duplicate, giving 23 and 27 colonies. The TAMC is:

13.In USP <62>, which selective agar is used for Pseudomonas aeruginosa?

14.In the USP <62> test for E. coli, MacConkey Broth is incubated at:

15.Test cultures used for growth promotion should be not more than how many passages from the reference culture?

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