Pharmaceutical Microbiology Manual
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ORA.007 Pharmaceutical Microbiology Manual
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- Revised: 25 Aug 2020 Title: Pharmaceutical Microbiology Manual
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OOD AND D RUG A DMINISTRATION O FFICE OF R EGULATORY A FFAIRS Office of Regulatory Science Document Number: ORA.007 Revision #: 02 Revised: 25 Aug 2020 Title: Pharmaceutical Microbiology Manual Page 65 of 92 For the most current and official copy, check QMiS. b. Apply swab (or sponge with handle) to surface (or equipment) being monitored with firm application pressure. c. When sampling (monitoring) flat surfaces allow the swab (or sponge with handle) to firmly rub an area of approximately 24 to 30 cm 2 . d. Apply the swab (or sponge) within this contact area in both a horizontal and vertical direction for approximately 10 seconds. e. Place the swab (or sponge) back into the carrier container (if it came with one) and place into the additional sterile Whirl-pak ® bag. Be sure to break off the handle portion of the sponge applicator stick. 3. Quantitative RODAC/Hycheck Sampling a. Carefully remove the lid of RODAC plate or loosen the cap on the Hycheck slide tube. Take care not to touch the agar surface. Note: Examine agar for contamination and or dehydration b. Gently but firmly touch the RODAC agar surface against the area being sampled, exert moderate, even, vertical pressure and then carefully replace lid. Avoid using rubbing motions of the plate at the sample site as this may break the agar. c. When using Hycheck press down on the spike to bend the paddle at the hinge line gently lowering the slide and press the agar to the surface with firm and even pressure. Repeat this step using the 2 nd agar surface on an area adjacent to the initial test site. Replace slide in container and close tightly. 4. Sampling of Irregular Surfaces A classified area may have an exposed irregular surface (i.e. particle board, wood, broken laminate, etc.) that requires sampling. In these situations, a colorless transport media such as letheen broth, saline or sterile water should be used to wet the sponge or swab prior to sampling. The microbiologist should avoid the use of D/E neutralizing broth which is a dark purple color and may discolor the irregular surface. At the microbiologist’s discretion, it may be determined that a RODAC plate should be used to sample the irregular surface. In this situation, a RODAC plate comprised of colorless agar such as tryptic soy agar would be appropriate. A colored agar such as D/E agar should be avoided. 5. Place the EM sample into a sterile Whirl-pak ® bag and identify the bag immediately after. |
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