Checking the cheap Home Depot "Defiant" flashlight specs, no wavelength is spec'ed. Package
shows a glowing scorpion which is leading me to think it is 395nm.(**)
Found Coast UV 1AA flashlight PX100 which actually specs 400nm.
Side note, I watch a fair number of "who-dunnit" detective series main from England, Scotland, Ireland,
Australia, New Zealand etc. In Murdock Mysteries (Canada) Det. Murdock employs a crude (at the
time, early 1900's) UV lamp for detecting blood; in a wooden box, portable.
Dave
** hmmmm...shouldn't scorpions get compensation for their role in selling these products...they're not even on the payroll!