[Experiments to study paper for its suitability as sterile wrapping (author's transl)]

A description is given of experiments for the testing of germ density of paper intended for use as sterile wrapping. The generally used storage tests are unsatisfactory. The following procedure is proposed for the testing: The paper specimen is cut into pieces of about 7 X 7 cm and steam-sterilized at 134 degrees C. A number of samples is placed on the bottom of Petri dishes and each paper sample is sprinkled with 5 drops of a 0.1 ml suspension of Staph. aureus in distilled water. After drying, the paper samples are placed underside down on the surface of a blood agar plate so as to ensure complete contact. After about 5 seconds the paper samples are removed and the plates are incubated for 16 hours at 37 degrees C.