Not as exciting as a UVC spectrometer, but a tiny fraction of the price. Although, this meter still cost £80 due to the extremely specialist nature of the sensor. Its intended purpose is for monitoring the output of UVC tubes for sterilising applications, and it has a peak sensitivity at the 254nm mercury vapour UVC line.
It uses a silicon carbide sensor with an interference filter to block UVA and UVB wavelengths.
This video also shows the impressive packaging used to ship cheap UVC light fittings around the world. To date I've not had any arrive broken of seven I've ordered so far.
I'll be featuring this meter again once I've rounded up a suitable collection of UVC emitting devices.
It was bought from a UK eBay listing, but was shipped from China. It was cheaper to buy from eBay than directly from AliExpress.
https://www.ebay.co.uk/itm/305881106496
Note that this meter is not intended as a precision lab-grade meter. It is for comparative monitoring of UVC sources in germicidal applications.
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