Compact Dry ETB

Extraction procedure

Sample preparation

• Viable count in water or liquid foodstuff
• Drop 1 ml of specimen (dilute if necessary) on the middle of the Compact Dry plate.
• Viable count in solid foodstuff
• Add buffer solution (e.g. 0.9% saline solution, PBS, buffered peptone water, etc.) to the specimen and homogenize by stomacher®. Drop 1 ml of specimen (dilute if necessary) on the middle of the dry sheet of the Compact Dry plate.
• Viable count in swab test specimen
• Use a sterile wet swab to wipe the surface which should be analyzed and put it back into the device with wiping solution.
• After shaking the device (approx. 10 seconds) drop 1 ml of wiping solution (dilute if necessary) on the middle of the Compact Dry plate.
• Use the Compact Dry Swab (Art. No. ZCS1002953, content 40 pcs) as single application (1 ml) or Promedia ST-25 (Art. No. Z0302, content 10 pcs) as multiple application (10 ml) for this procedure.

Test instructions

• Open the top cover of the Compact Dry plate. Drop 1 ml of sample in the middle of the plate.
• Sample diffuses automatically and evenly into the sheet and transforms the dried sheet into a gel within seconds.
• Put the cover again on the plate and place it in the incubator in a horizontal position
• After incubation, count the number of all grown colonies on the plate.