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Your cart is empty.General Tools UV512C Digital Ultraviolet UVC Light Meter is designed to measure ultraviolet light in the range from 220 to 275 nanometers (nM). The illumination range of the meter allows users to conduct the most precise quantitative measurements of ultraviolet radiation for radiometry and laboratory requirements, UV-curing in off-set printing, lamp UV intensity & aging, industrial process monitoring, semiconductor fabrication, sunlight UV intensity to prevent skin damage, sterilization and environmental monitoring. Conduct UV degradation studies for pharmaceutical, cosmetic, semiconductor, printing, forensic applications and more. The UV light intensity appears on the large backlit display in either ìW or mW/cm² while the small lower display simultaneously shows minimum, maximum, average, and recorded data. Up to 20 data points can be recorded automatically at a variety of intervals. SPECIFICATIONS Measurement ranges: 1 to 9999 μW/cm2 (low) and 0. 01 to 40 mW/cm2 (high) Measurement accuracy: (4% of reading +1 digit) Spectral range: 220 to 275 nm Calibration point: 254 nm Sampling time: 0. 3 seconds Memory capacity: 20 measurements, plus 1 for interval time Interval time options: 1, 2, 5, 10 and 30 seconds and 1, 3, 5 and 10 minutes Operating temperature: 32° to 122°F (0° to 50°C) @ Weight: 3. 2 oz. (90g) Power source: "9V" battery (included) GENERAL TOOLS - THE PRECISE TOOL FOR DOING THE JOB EXACTLY RIGHT. Offering over 1, 000 tools, we’re proud to provide tradesmen, craftsmen and DIYers around the world with a broad range of affordable, specific-purpose mechanical hand tools and precision measuring and inspection tools. For inquiries, please contact our Customer Service Department at 212-431-6100. We strive to provide our customers with 100% satisfaction. WORK SMARTER, MEASURE BETTER & BE MORE PRODUCTIVE WITH GENERAL TOOLS
LivinCR
Reviewed in the United States on August 9, 2024
I have tested clothes, windows, windows with UV blocking film, helments, cloud cover, different times of the day, etc. I can't tell you about it's accuracy because I use it to compare to direct or indirect sunlight. I take a reading of something and compare it to the reading of the sun at that moment.Example: Helmet Visor up, rating over 7,000 while cloudy. Clear visor down, rating 32. That means it's cutting the UV over 200x. Funny, the smoke visor I have doesn't cut hardly any UV. Best clothes for severe sun, heavy cotton like Levi work shirts that are made out of denim. Better than any sunscreen. I have tested hats as well.
Leo
Reviewed in the United States on July 9, 2024
This item works very well and accurately.
Aircraftengineer
Reviewed in the United States on July 8, 2024
I had cataracts and got a lens called LAL+. These are adjustable after you get LAL lenses put in. The problem is that they make you wear UV400 certified glasses until you get the vision updates locked in. This meter is perfect for measuring your glasses and for measuring your environment. The UV frequency you have to avoid with the LAL lenses is between 200 and 400 NM. Specifically 165NM. This meter makes life easy. Great price. With this meter you can buy any UV400 certified pair of glasses and make sure they meet spec.
gilles saindon
Reviewed in Canada on May 5, 2024
The claims online and on the box say 280-400nm, while the provided paperwork states only 290-370nm.
RobertoCleveland
Reviewed in the United States on May 26, 2024
A great tool for those with sun photosensitivity. The absolute numbers on the scale mean little to me, but that is no problem; comparing direct light levels at high noon vs. afternoon vs. first light, through a car windshield and a car side window, through home windows, etc. to know how much relative UV is in each situation is very helpful!
Lou Deguzman
Reviewed in the United States on April 28, 2023
Easy to use but the meter is not calibrated correctly. I have 2 UV meters that are out of calibration and they read 5.0 and 5.9 mW/cm2 respectively for our lamp source (with I-line filter). This meter reads 11mW/cm2 so it made me suspicious. I purchased another brand in Amazon and it reads 5.6 mW/cm2 so I trust it more. The return period is now past so I cannot return it. It would be great if I can calibrate it myself but I don't think it is possible.
E
Reviewed in Canada on August 27, 2021
Some of UVA (and UVB) wavelengths are not covered. (Sensitive to some of UVA and some of UVB spectrum) Hopefully remaining coverage could be a reliable proxy.FIELD TESTS:I have tested sensor with regular transparent glass: value dropped by 35% or so. When testing various glasses with UV protection, value dropped 98%.Testing window light with some kind of film (came from the builder), value dropped 60-70%.Since negative control (regular non UVA-blocking glass) did not drop value of UV to 0, this device may be used reliably to aproximate UVA/UVB protection for glasses; measure UV levels indoors.
T.C.
Reviewed in Canada on February 4, 2019
bought it for sun protection measures. no problem with it so far. easy to use.
Customer
Reviewed in the United States on April 26, 2018
General Tools UV513AB Digital UVC Meter, 280-400 nm [THIS IS COPIED FROM THE ITEM DESCRIPTION]I will return this item since the description of the item (copied and pasted above from the Amazon.com website today April 25, 2018 (also see a photo of the website description) does not match the item I received (see photos of item description on the packaging of the device received).There is a deceptive variance!As a novice to measuring UVA, UVB, and UVC, I read the description of the item on Amazon.com as a “UVC Meter.“ Perhaps others might fall for this description as I did. Most of us, I think, would believe that if something says it is a “UVC Meter” then that it means it is a UVC Meter.The item received is only for UVA and UVB measurements. VERY DECEPTIVE.How a seller can say that the item I received is a “UVC Meter“ is beyond comprehension and inexcusable! It seems like the description could be perceived as fraud, no?In case another person is interested, Wikipedia says that UVA spans the wavelength of 315-400 nm. UVB spans the wavelength of 280-325 nm. This item, therefore will measure both UVA and UVB from 280 to 400 nm. I take it from other reviews that separation of UVA measurements from UVB measurements may not be possible. Check on that if it is important.According to Wikipedia, UVC is measured at 100-280 nm, clearly well outside the capabilities of this item as described in its packaging.
John Thoren
Reviewed in the United States on May 29, 2017
Great product, well built. It has two "scales" so microwatts/cmsq and milliwatts/cm can be used depending on the intensity of light. Full summer sun in the 12 milliwatt range, while indoor, through curtains, clothing, etc. in 100's of microwatts. One can get a great "feel" for the difference in intensity using the two scales.If one keeps in mind that it's uvb sensitivity is only 20-30% of its uva sensitivity, one can still use it to compare the protection various materials provide for sun exposure, just by comparing the *relative* intensity of measurments with/without protection.It cannot "switch" between measuring uva, then uvb separately, event though the manual suggests it might be possible.
Spruce
Reviewed in Canada on July 17, 2015
Arrived broken. Had to fix by flipping module and switching battery polarity. Works ok now. Limit is 10000uW/cm which is lower than that given off by the sun on a bright day.
Anthony
Reviewed in the United States on January 10, 2015
I like this digital UV meter because it lets me know how strong UV light will be from many sources. For example, somebody says the halogen light at your desk has very strong UV. After I bought this meter, I measured UV light from halogen bulb, CFL bulb, LED light bulb, incandescent light bulb at home and know exactly how much UV light emitted from them with compared to the UV light from the Sun. In this way, I can avoid the source that emits very strong UV light.This meter was built very well. It comes with a hard case although the hard case was not shown in the picture. The wand in this meter need a simple assembly by using five supplied screws but it is very easy. The measurement is very sensitive and the sampling rate seems high because I can see the measured value changes very quickly.It totally met my expectations so I give 5 stars.
Murdock Cassell
Reviewed in Canada on October 19, 2014
All good
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