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Table 2 Statistical comparison of drying rates and volumes of six ABHR test products as a function of volume

From: The relative influences of product volume, delivery format and alcohol concentration on dry-time and efficacy of alcohol-based hand rubs

Test product

Active ingredient

Volume in mL drying in 30 sa

Drying rate in s/mL (95%CI)b

Drying rate Significance groupsc

Foam A

62% ethanol (v/v)

1.7

18.2 (15.5-21.0)

1

    

Foam B

70% ethanol (v/v)

1.7

17.2 (14.5-19.8)

1

2

   

Rinse D

70% ethanol (v/v)

1.7

15.5 (12.9- 18.0)

 

2

3

  

Gel C

70% ethanol (v/v)

1.9

14.0 (11.5-16.4)

  

3

4

 

Rinse E

80% ethanol (v/v)

2.0

12.8 (10.4-15.2)

   

4

5

Gel F

90% ethanol (v/v)d

2.1

12.2 (9.8-14.7)

    

5

  1. aDetermined from the simple linear regression analysis where T = 30 s.
  2. bChange in dry-time per mL determined by a weighted regression model (see Methods).
  3. cTest products with the same number are not significantly different (See Methods).
  4. dConcentration on product label is reported as weight per weight (w/w); (v/v) concentration was determined analytically in the authors’ laboratory (See Methods).