Table 1 Optimisation of NTP treatment parameters against P. aeruginosa biofilms cultured in the EBM for 72 h showing Log10 reduction (cfu cm-2) of biofilm density compared to untreated controls and the result of complete biofilm elimination testing (via broth validation). aArgon control, bUntreated control. *reduced to below the limit of detection.

From: Direct application of non-thermal plasma technology for the elimination of biofilm from endoscope channels

Power

(W)

Argon flow rate

(L min− 1)

Reduction

(Log10 CFU cm− 2)

Complete Biofilm Elimination Test Result

(where tested)

80

2.5

7.53*

No growth

70

2.5

7.49*

 

60

2.5

7.49*

 

50

2.5

7.49*

 

40

2.5

7.64*

 

40

2

7.49*

No growth

0a

2.5

1.12

Growth

0b

0

0

Growth

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