Please note that I have changed my mind on this product. After much more research, I decided that the failure of these bulbs, as I noted below, was caused by a faulty bulb, NOT the bulbs. To be honest I've changed my rating to an "average" three stars - not because I find the lamps either good or bad, but because of a lamp malfunction I couldn't find anything. . I would delete this review entirely, but I'm afraid others may have read it and negatively impacted my original one star rating. Keep that in mind as you read the original review below:================================== I read the mention of these lamps by another reviewer who pointed out that they are a much cheaper replacement for OttLite lamps than Ottlite brand lamps. Indeed they were, so I ordered this four pack. After receiving them, I tried them out. The form factor appears to be identical to the original OttLite bulb, but all four don't work. One of them gave a quick flash when I turned on the lamp and then nothing at all. The other three managed to produce an orange glow when turned on with repeated bright flashes at the base as the ballast attempted to set them alight. One of them actually ignited after quite a long time, emitting the expected amount of white light. However, after removing it and later trying again, it didn't work and just produced an orange glow. Despite repeated attempts, I've never been able to get any of them to go through the orange glow stage again. At several points during these tests I re-inserted the original OttLite bulb, which turned on immediately with no issues, so I don't think the ballast was the problem. If anyone has an idea what could be wrong I'd love to hear it. In the meantime, I think I just threw away over $10 on utterly useless lightbulbs, further proof that you often get what you pay for. I would be interested to know if anyone else has had any luck with these bulbs, particularly OttLite bulbs. My lamp is model GX7825, 120V 60Hz 13W.
TCP CFL Double Circle Lamp, 200W Equivalent, Bright White (3500K) T6 Circline Bulb
8 Review
π‘ Feit Value Pack 13w=60w Soft White CFL EcoBulbs - Save Energy with this Convenient 1 Box Bundle
5 Review
π‘ Energy-Saving T2 Spiral CFL Bulb, 5000k Daylight, 23W (100W Equivalent), 1520 Lumens, E26 Medium Base, 120V, UL Listed - Pack of 8
7 Review
Sylvania 20318 Compact Fluorescent 4 Pin Single Tube 4100K, 13-watt: Efficient Lighting Solution for Any Space
10 Review
E12 T22 Low Voltage Edison Bulb LED 12V-24V Vintage Tubular Night Light Bulb 1W 100 Lumen LED Candelabra Light Bulb 2700K 10W Equivalent Small Filament Bulb For RV,Out Door String Lights, Pack Of 25
15 Review
Set Of 4 Geeni Prisma Wi-Fi Multicolor LED Light Bulbs, 1050 Lumens, 2700K, Dimmable, No Hub Required, Compatible With Alexa And Google Assistant, 75-Watt Equivalent
41 Review
20 Pack 5CCT 4FT LED T8 Ballast Bypass Type B Light Tube, UL/FCC Certified - 18W, 2300Lm, 3000K-6500K Selectable
21 Review
Luminescent lamp Camelion 11066 ultraviolet, E27, 26 W
12 Review