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Table 3 Comparison between the dose calculated from direct measurements of irradiance and the dose indicated by the UVC-100 TRI photocromic dosimeters

From: Ultraviolet C lamps for disinfection of surfaces potentially contaminated with SARS-CoV-2 in critical hospital settings: examples of their use and some practical advice

Position

Measured irradiance

[μWatt/cm2]

Expected dose

[mJ/cm2]

UVC-100 TRI colora

Is the target dose of 37 mJ/cm2 reached?

CT bed - Mobile support equipped with an AirZingâ„¢ PRO5040 lamp

 Reference position: side edge of the bed

160

37

LO-DO

Probably yes

 Reference position: headrest

46

37

LO-DO

Probably yes

 Test position: lateral edge of the headrest

44

35

LO-DO

Probably yes

Cubicle for swab - Mobile support equipped with two AirZingâ„¢ PRO5040 lamps

 Reference position: medical chair (armrest of the chair)

191

37

LO-DO

Probably yes

 Reference position: side edge of the bed

74

37

LO-DO

Probably yes

 Test position: medical chair (lateral edge of the seat)

69

35

LO-DO

Probably yes

Waiting room for COVID-19 triage - Two Deluxe110 lamps on the ceiling

 Reference position: first chair (armrest of the chair)

196

37

DO

Yes

 Test position: first chair (lateral edge of the seat)

190

36

DO

Yes

 Reference position: second chair (armrest of the chair)

89

37

LO-DO

Yes

 Test position: second chair (lateral edge of the seat)

84

35

LO-DO

Probably yes

Waiting room for COVID-19 triage - Two AirZingâ„¢ PRO5040 lamps on the ceiling

 Reference position: first chair (armrest of the chair)

42

37

LO-DO

Probably yes

 Test position: first chair (lateral edge of the seat)

39

34

LO-DO

Probably yes

 Reference position: second chair (armrest of the chair)

13

37

LO-DO

Probably yes

 Test position: second chair (lateral edge of the seat)

9

26

LO

Probably no

Waiting room for COVID-19 triage - Two Sterilight-S72-UV-C lamps on the ceiling

 Reference position: first chair (armrest of the chair)

109

37

LO-DO

Probably yes

 Test position: first chair (lateral edge of the seat)

100

34

LO-DO

Probably yes

 Reference position: second chair (armrest of the chair)

30

37

LO-DO

Probably yes

 Test position: second chair (lateral edge of the seat)

23

28

LO

Probably no

Waiting room for COVID-19 triage - Two Deluxe110 lamps on the walls

 Reference position: first chair (armrest of the chair)

139

37

LO-DO

Probably yes

 Test position: first chair (lateral edge of the seat)

130

35

LO-DO

Probably yes

 Reference position: second chair (armrest of the chair)

28

37

LO-DO

Probably yes

 Test position: second chair (lateral edge of the seat)

23

30

LO

Probably no

  1. aLO-DO intermediate between light orange and dark orange, LO very similar to light orange, DO very similar to dark orange
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BMC Infectious Diseases

ISSN: 1471-2334

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