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Table 3 Results from in-use tests

From: Development of a standardized method to evaluate the protective efficiency of cosmetic packaging against microbial contamination

 

Results at days 4, 5, 6 and 7

Results at day 8

Pack code

Delivered dose 1

Delivered dose 2

Delivered dose 1

Delivered dose 2

Delivered dose 1 (1 g)

Delivered dose 2 (1 g)

Reservoir

Non contaminated (%)

Non contaminated (%)

Contamination < 1000 UFC (%)

Contamination < 1000 UFC (%)

Non contaminated (%)

Contamination < 1000 UFC (%)

Non contaminated (%)

Contamination < 10 UFC (%)

Contamination < 1000 UFC (%)

A

0

0

5

7.5

0

0

100

100

100

0

0

0

0

0

0

100

100

100

0

0

2.5

30

0

0

100

100

100

B

0

0

60

70

40

90

100

100

100

10

7.5

62.5

80

60

90

100

100

100

C

37.5

85

100

100

100

100

100

100

100

2.5

15

70

87.5

0

100

100

100

100

0

0

5

15

0

20

100

100

100

D

45

52.5

75

82.5

100

100

100

100

100

0

0

12.5

22.5

0

10

100

100

100

0

0

0

72.5

0

40

100

100

100

E

32.5

82.5

100

100

100

100

100

100

100

0

0

22.5

75

60

100

100

100

100

2.5

10

50

72.5

60

80

100

100

100

0

0

42.5

90

100

100

100

100

100

10

0

65

85

60

90

100

100

100

  1. A total of 16 series of 50 devices was tested in duplicate (i.e. 800 packs)
  2. Values are expressed as percentages of the number of tested packs in order to make easier the comparisons