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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 AirZing™ 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 AirZing™ 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 AirZing™ 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