3rd Edition 6-in-1

A reusable multi-wavelength test card with tests on both sides. The front has five tests: a UVC indicator, a wideband UV intensity strip, a shortwave test, a longwave UVA/UVB test, and a center circle that confirms more than 300 µW at 254 nm. The back is a UVC/Far-UVC beam detector.
Source: www.quantadose.com

Expose the card to the light for no more than 15 seconds. Watch the UVC test while the card is under the light, because the letters disappear as soon as it's removed. The intensity test can be read in a closed box or directly under the light. Safety: UV light can harm your eyes and skin, so wear proper safety equipment to protect them whenever you expose the card to the light. If the device you're testing, such as a UV sanitizer box, doesn't let you see the card while it's under the light, place your phone inside next to the card recording video, then watch the recording to see whether the green UV-C lit up. The fluorescent readout only shows while the card is in direct light.
Source: www.quantadose.com

Yes. Safety: UV light can harm your eyes and skin, so wear proper safety equipment to protect them whenever you expose the card to the light.
Source: QuantaDose (Quanta X Technology)

If the device you're testing, such as a UV sanitizer box, doesn't let you see the card while it's under the light, place your phone inside next to the card recording video, then watch the recording to see whether the green UV-C lit up. The fluorescent readout only shows while the card is in direct light.
Source: QuantaDose (Quanta X Technology)

The center test glows green under 220–275 nm UVC and red/pink under 300–395 nm UVA/UVB. After exposure ends it shows a purple color.
Source: www.quantadose.com

If the letters UV remain visible in the inner circle after the card is removed from 254 nm UVC, intensity is greater than 300 microwatts. The Amazon listing says the letters show for a brief time (3–15 seconds).
Source: www.amazon.com (Amazon listing)

The card glows in two colors to tell longwave UVA apart from shortwave UVC. A third color, a residual shade of purple, indicates UV intensity in 15 seconds.
Source: www.amazon.com (Amazon listing)

The shortwave analyte responds to 220–275 nm UVC. It's clear before exposure and glows green to yellow-lime under a shortwave UVC source.
Source: www.amazon.com (Amazon listing)

The longwave analyte responds to 300–395 nm UVA/UVB. It's clear before exposure and glows red to red-pink under a longwave UV source.
Source: www.amazon.com (Amazon listing)

The photochromic strip responds to 200–400 nm UVA/UVB/UVC. It's clear before exposure and shows shades of purple after. Higher intensity makes a darker color, and at max value shorter wavelengths give a lighter color.
Source: www.quantadose.com

The product page gives the formula: UV dose = UV intensity × exposure time in seconds. Use >300 µW/cm² when the letters UV remain visible after 15 seconds.
Source: www.quantadose.com

It shows the beam angle of any UVC or Far-UVC bulb across a large luminescent area. That's useful for professional UVGI installers, including when installing Far-UV lighting in occupied spaces.
Source: www.amazon.com (Amazon listing)

The back beam detector is designed for UVC and Far-UVC bulbs, and the shortwave analyte is listed as sensitive to 220–275 nm.
Source: www.amazon.com (Amazon listing)

Yes. The Amazon listing calls it perfect for testing 365 nm/395 nm UV flashlights and professional nail gel UV lights. The product page also suggests checking whether an aging nail-curing lamp is still strong enough.
Source: www.amazon.com (Amazon listing)

Yes. The product page suggests testing the intensity left in your reptile lamp, and the Amazon listing says the strip is perfect for testing UVB reptile lights.
Source: www.quantadose.com

Yes. The product page suggests checking whether UV-blocking glasses and car window film block UV as claimed. One Amazon reviewer wrote: “...this card showed my glasses work because it prevented the uv ray from showing anything on the card. I'll buy it again and highly recommend it.”
Source: www.quantadose.com

The product page says experiments on ultraviolet light and fluorescence are easy to do in the classroom to explore different wavelengths of the UV spectrum.
Source: www.quantadose.com

Reusable for up to about 300 fifteen-second tests under UVC when stored properly, away from light and moisture.
Source: www.amazon.com (Amazon listing)

Read it right away. The UVC letters disappear immediately when the light is off, and the center UV letters show for only about 3–15 seconds. Watch the UVC test under the light, and read the center circle as soon as you remove the card.
Source: www.amazon.com (Amazon listing)

The product page links to usage instructions at quantadose.com/v3/. The back of the card also has a QR code labeled Instructions and Usage Tips.
Source: www.quantadose.com

Yes, that's the main use. One Amazon reviewer wrote: “This UV test card differentiated true and fake UVC disinfection devices instantly by checking the presence of shortwave UVC or deep UV....”
Source: www.amazon.com (Amazon listing)

It's a quick visual check rather than a digital meter. One Amazon reviewer wrote: “...A great alternative to very expensive digital UV light meters.”
Source: www.amazon.com (Amazon listing)

The Amazon listing says the wideband strip responds to artificial or natural light between 200–400 nm. The shortwave and longwave analytes are described for artificial sources. Don't use the card for sunscreen decisions (see the FDA notice).
Source: www.amazon.com (Amazon listing)

It adds dedicated longwave UVA/UVB and shortwave tests, a center circle that confirms >300 µW at 254 nm, and a Far-UVC beam detector on the back, for six tests in total.
Source: www.quantadose.com

The 6-in-1 is available on Amazon and Walmart. Check each listing for the current price.
Source: www.quantadose.com

Email Quanta X Technology support at info@quantadose.cards.
Source: www.quantadose.com

We recommend replacing your card about once a year. That said, Quanta X Technology has tested properly sealed, unused cards over three years old and they still work like new. Store cards sealed, away from light and moisture.
Source: QuantaDose (Quanta X Technology)

Yes. Sunlight and other UV slowly use up the card, so keep it out of the sun. Quanta X Technology says leaving a card in direct sunlight can burn it out in about an hour. Keep each test to about 15 seconds and store the card away from light and moisture between tests, for example in its black UV-resistant sleeve if it came with one, or anywhere dark and dry.
Source: www.amazon.com (Amazon listings, checked Nov 4, 2026)

On Amazon, as checked November 4, 2026: the 1st Edition averages 4.5 out of 5 stars from 732 ratings, the 2nd Edition 4.5 stars from 561 ratings, and the 3rd Edition 6-in-1 4.4 stars from 307 ratings. Common themes are that it's easy and fast to use, and that it catches fake UVC sanitizers. One reviewer wrote, "I had 3 different UVC lights for sanitizing and only 1 is worth the money." People also use it to check sunglasses, car windows and reptile lamps. Some reviewers say sunlight or UVA/UVB readings can be hard to judge; the card is mainly designed for testing UV light sources.
Source: www.amazon.com (Amazon listings, checked Nov 4, 2026)

QuantaDose is a brand of Quanta X Technology LLC, an American company in Seminole, Florida, founded in 2020 at the start of the pandemic. The team has engineering and biochemistry expertise, and its mission is to make tools that help fight pathogens. Besides the UVC test cards, Quanta X Technology does Far-UVC lighting design and manufacturing, with Far-UVC advisers to help people pick the right lighting. The company sells online.
Source: www.quantadose.com

You can order at quantadose.com or on Amazon. Quanta X Technology is the company that makes the cards, but orders aren't placed on a quantaxtechnology site. For questions, email info@quantadose.cards or call +1 (800) 713-9004.
Source: www.quantadose.com

The cards use special indicator inks, called analytes. There are fluorescent inks that glow green under UVC, or reddish-pink under UVA/UVB on the 6-in-1, and a photochromic ink that turns purple to show intensity. The 2nd Edition is printed on UV-resilient PVC made for high-power UVC. The exact ink formulas aren't published; for more detail I can forward you to a Quanta X Technology associate.
Source: www.quantadose.com

In general science terms, a fluorescent material absorbs invisible UV light and gives it back right away as visible light, which is why you see a color glow. It only glows while the UV is hitting it and stops as soon as the light is removed. On QuantaDose cards, the ink in the UV-C letters is chosen to glow green under germicidal UVC, and on the 6-in-1, a longwave ink glows reddish-pink under UVA/UVB. That's why you read the green or pink while the card is still under the light.
Source: General science (not a product claim) · Card details: www.quantadose.com

In general science terms, a photochromic material changes color when UV light hits it, because the UV changes the shape of its molecules, and then it slowly fades back to clear once the UV is gone. Stronger UV changes more molecules, so the color is darker. On QuantaDose cards, the photochromic strip is clear before exposure and turns shades of purple after about 15 seconds under UV, giving a rough intensity reading. Read it right after you take the card out of the light, before it fades. It darkens more easily under UVA/UVB than UVC.
Source: General science (not a product claim) · Card details: www.quantadose.com