The Covid-19 pandemic has brought a new awareness to cleanliness in nearly every business sector in the world. Consequently, interest in UV light to combat viruses and bacteria, which was already growing in recent years, has amplified. But how viable and safe are these options?
One of the leaders in this charge is a company named Puro, as they have developed light fixtures that feature patented Violet Defense™ technology. Violet Defense is a breakthrough UV disinfection solution that kills 99.9% of bacteria and can be installed in a ceiling, suspended or wall-mounted. It can also dramatically reduce growth of fungi such as yeasts and mold, when used at recommended spacing and run-times. These fixtures deliver a broad spectrum of UV-C (200-280nm), UV-B (280-320nm) and UV-A light (320-400nm) to provide a more varied attack on viruses and bacteria.
Puro UV Disinfection Lighting comes in several fixture styles to give users the ability to disinfect a room of any size. They can be used on demand, scheduled to run overnight, or integrated into your building automation system (BAS) for reporting and ease of integration. There are primarily two styles; the Puro Helo Fixture and the Puro Sentry Mobile.
The Puro Helo fixtures provide UV disinfection from above. They are officially the first known high intensity UV disinfection fixture that can be installed in the ceiling. With proper layout (developed by Puro), these can provide whole-room protection and the ability to disinfect on demand in one cycle. The picture above is of the Helo F1 fixture, which can fit in 2×2 drop ceilings or wall-mounted. Scheduled cycles ensure effective killing of bacteria, fungi and viruses overnight when the space is unoccupied. A motion sensor is present for automatic shut off to prevent unnecessary UV exposure.
The Puro Helo F2 fixture takes this technology a step further, with a larger fixture that can be installed via wall mount or dropped into 2×4 spaces in the ceiling. The Helo F2 is powered by full spectrum UV, including germicidal UV-C and anti-bacterial UV-B and UV-A to effectively kill bacteria, fungi and viruses in a matter of minutes. The dual UV light engine features a pulsed Xenon lamp for 12′ x 12′ coverage. As with the F1 above, a motion sensor within the fixture ensures it won’t operate while the room is occupied (it shuts off and then resumes once the room is unoccupied).
Next we take a look at the mobile Sentry fixtures developed by Puro. These versatile units are designed for portability, allowing for easy positioning and simply control. The basic form of this is the Puro Sentry M1 (pictured above). It features a pulsed Xenon lamp on a lightweight tripod that is easy to move with adjustable height and head angles. There is also the M1-2, also in the above picture, which has two UV light engines instead of 1. This allows for a more omni-directional spread of coverage with the same mobile flexibility.
In applications where more power is needed, there is the Sentry M2 from Puro. This comes in a fixture similar to the M1; on a tripod with a telescopic head but this time with dual UV light engines. The other style is the M2-C which has a wheeled base (pictured above), making it even easier to move around as needed. These fixtures just like the Helo fixtures have an occ sensor to ensure they aren’t being used while the rooms are occupied. Operational mode is programmed through an Ethernet connection to the unit. The unit will complete a single cycle of 15 to 30 minutes.
The ultimate in UV light disinfection is present with the Puro Sentry M4. This powerful fixture comes mounted on a wheeled base with locking casters and a telescopic neck for ideal positioning. Two Dual-UV light engines with pulsed xenon lamps provide nearly full 360° coverage.
Now for the question everyone is asking – does Puro’s offerings above kill Covid-19, aka the Coronavirus? At the time of publish date, it can’t officially be said that they kill off the Coronavirus with it’s disinfectant lighting. But given it kills 99.9% of bacteria and viruses, it is all but certain that it will.
That brings us to the next question; who are the companies investing in this technology? The obvious being hospitals, particularly for operating rooms. The manual cleaning process is arduous and still needed, but these fixtures have supplemented the cleaning process in these applications in a safe, cost-effective manner. Other customers include assisted living, schools, hotels, and manufacturing. In particular the Sentry M1 and M2 fixtures have been utilized during the Coronavirus threat due to their ease of mobility, allowing them to be moved around to problem areas for disinfecting.
The cost is high for this technology, but not so much in relation to the cost of having an outbreak. To inquire for more information or find out what what the best solution for your facility would be, contact Premier Lighting today.





Are these products available for rent? Approx cost to rent or own?
Thanks for the message Doug. These aren’t for rent but you can purchase them off the website or request a quote. Cost is in the $3799.95-$8995 range for most of the fixtures. Click this link for all the info – Puro Disinfectant Fixtures. If you have any questions on this just let us know!