Re: 6.2 and 6.4 fluoro, mv bulb tests
- Good catch Andrew... I hadn't noticed that. Apparently the intense
HID beam solarized the glass more than one might expect, attenuating
shorter wavelengths via reduced percent transmission.
I believe fluorescents are much more linear in aging, where most
wavelengths depreciate generally at the same rate. Perhaps some MV's
with super high quality glass would do better than Vitalux?
--- In UVB_Meter_Owners@yahoogroups.com, "andrew" <alevin@i...>
the comparison of the 6.2 and 6.4 between the new and one year old
osram vitalux is interesting
>the 6.2 readings, say 2% down on the 1 year versus the new
>the 6.4 readings say down by about 30%
>steve has achieved a remarkable result with the 6.4 with tight
readings of a diffcult area of the spectrum to measure
>the ultra vitalux has a very narrow beam and i would infer the main
> reason for the decay is solarisation knocking off the 290nm whichas i understand it is a characteristic of solarisation, attentuating
the shorter wavelengths?
This email message is a notification to let you know that
a file has been uploaded to the Files area of the UVB_Meter_Owners
File : /UVI_Meter_Instr_Bklt_11-8-13_FIN.pdf
Uploaded by : zoo_med_labs <shane@...>
You can access this file at the URL:
To learn more about file sharing for your group, please visit: