PURO Pulsed-Xenon UV Dosimeter User Guide
- June 5, 2024
- PURO
Table of Contents
PURO Pulsed-Xenon UV Dosimeter
Anatomy
PULSED XENON UV DOSIMETER INSTRUCTIONS
The UV dose indicators are designed to provide a visual indication of applied UV energy.
- Place the unexposed card(s) at desired location in the area. Cards can be used in horizontal or vertical positions. Always make sure the color changing area faces towards the UV source.
- As the center yellow indicator is exposed to UV, it will gradually change colors based on exposure or UV dosage. For accurate results, record the exposure level immediately after treatment.
- If your results don’t match the target dosage shade exactly, for recording purposes use the lesser value.
Cards are not intended to reflect exact UV dosage measurements, but is designed
as visual reference for UV treated areas confirming treatment has occurred with
UV light. This dosimeter is intended as a visual reference of accumulated UV
dose only, and does not determine level of cleanliness. A card that has been
pre-exposed to light should be disposed of and not used.
For more information, visit
purolighting.com/dosimeter
INSTALLATION
First identify desired disinfection areas within your space. Once identified ensure that your pulsed-Xenon product has a direct light path to your chosen disinfection area. The examples below show a Sentry Mobile Tripod, powered by Violet Defense® technology, directed towards the desk and bed as disinfection targets within a room.
Sentry
Mobile Tripod angled towards desk. Ideal placement for dosimeter is circled.
Sentry
Mobile Tripod angled towards bed. Ideal placement for dosimeter is circled.
Prepare selected surfaces in step one for testing. Remove anything that may
obstruct the light pathway to the target surface. Avoid shadowing and indirect
exposure to dosimeter card surface.
Incorrect – Objects obstructing light and improper
placement of dosimeter card. 
Correct – Chair has been moved no longer obstructing
light. Dosimeter on side of filing cabinet has been removed as well.
Remove the 3M protective strip from the top of the back of the cards to expose adhesive. Place cards adhesive side down on target surfaces selected in step one.
- At minimum place one card per target surface.
- To understand irradiance over time we recommend three cards per target surface.
Three
dosimeter cards prepared for testing on bed. 
Three dosimeter cards prepared for testing on desk.
With cards adhered to target surfaces, power on Sentry Mobile Tripod and step out of the room.
- If testing one card, re-enter room after disinfection cycle has completed and retrieve card.
- If testing multiple cards re-enter room after disinfection cycle has completed and retrieve one card. Leave the other cards and recommence the disinfection cycle. Repeat until all cards/disinfection cycles are complete.
Once testing is complete, and cards are retrieved, mark the following: Date,
Test Time Elapsed, Operator, and Location on irradiated cards. Take pictures
of the cards for records as chemical reaction will reverse over time changing
results.
Do not reuse cards.
- If multiple dosimeter cards are tested, it is recommended to take a photo of all tested cards for easy reference of irradiance over time.
Example
photo of multiple cards tested at one location for easy reference of
irradiance over time.