Table 1 Bactericidal activity of NTP-generating devices (Laboratory prototypes 1 and 2 and Plasmatico v1.0) against Pseudomonas aeruginosa PAO1 and methicillin resistant Staphylococcus aureus (MRSA) ATCC 43300 (clinical isolate).

From: Scaled-up non-thermal plasma-generating device Plasmatico enables effective and harmless disinfection of personal protective equipment

NTP exposure time (min)

Laboratory prototype 1

Laboratory prototype 2

Plasmatico v1.0

CFU/mL

CFU/mL

CFU/mL

Pseudomonas aeruginosa PAO1

0

5 × 107

5 × 107

5 × 107

15

n.q.

n.q.

n.q.

30

24

n.q

n.q

60

0

0

0

90

0

0

0

Methicillin-resistant Staphylococcus aureus ATCC 43300 (clinical isolate)

0

2 × 107

2 × 107

2 × 107

15

n.q.

n.q.

n.q.

30

272

n.q.

n.q.

60

1

3

60

90

0

0

1

  1. Bacteria concentration in control samples was determined using decimal dilution. Results are expressed as colony forming units per milliliter (CFU/mL). All quantifiable results were significant at p < 0.05. n.q.—not quantifiable by method used.
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