Phillips (Luxeon) etc., do bin their products according to luminous flux and colour output to very fine tolerances. However, I doubt the off-the-shelf consumer, and particularly the ebay shopper can easily purchase binned items.
Originally Posted by MattKing
I have and use as safelights two LED bulb arrays that I obtained through the internet. I have done most of the testing included in the Kodak recommended test (haven't reversed the order of the exposure and the pre-exposure) and the bulb arrays I have have passed that test.
My concern with recommending them to someone who doesn't understand the need to do a comprehensive safelight test is that the LED bulbs are not designed for darkroom use, so the manufacturers are unlikely to test for that use if there is any change or variation in the production process.
I think the LED bulbs are great for safelight use for anyone willing to test.