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Table 2 Plot of air sampling of the car's AC system inside the cabin when using either outside air (OA), inside air (IA), or variable use (VAR) of both types of air

From: The microbiological quality of air improves when using air conditioning systems in cars

time (min)

fresh air (outside) (OA)

re-circulating (inside) (IA)

variable (outside/inside) (VAR)

 

TSM

DG-18

particle

TSM

DG-18

particle

air

TSM

DG-18

particle

no AC use

●

●

●

●

●

●

 

●

●

●

AC start

●

●

●

●

●

●

OA

●

●

●

1

●

  

●

   

●

●

●

2

●

●

●

●

 

●

    

3

●

  

●

   

●

 

●

4

●

 

●

●

 

●

    

5

●

●

 

●

●

  

●

●

●

6

●

 

●

●

 

●

    

7

●

      

●

 

●

8

●

 

●

       

9

●

      

●

 

●

10

●

●

●

       

11

       

●

●

●

13

●

 

●

   

IA

●

●

●

15

       

●

 

●

16

●

 

●

       

17

       

●

●

●

19

      

OA

●

●

●

20

●

●

●

       

21

       

●

 

●

outside the cabin

●

●

●

●

●

●

 

●

●

●

  1. tryptic soy medium (TSM) indicator agar = evaluation of the total number of pathogens
  2. dichloran glycerol (DG-18) agar = evaluation of the number of fungal spores
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BMC Infectious Diseases

ISSN: 1471-2334

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