kkinggong

i found some good prices on ge cfl bulbs but they dont say a kelvin rating on them so i was wondering if there is some thing else on the box that would say what the kelvin rateing is i.e. words like warm and cool

sticky_bud

google cfl's theres gotta be 1000's of associations with kelvin and the soft warm yada yada....

I know that soft and warm white is 2700K and I THINK they call 6000K Daylight, idk google em....

Here's a bonghit for ur quest for knowledge



so everyone around here knows.....Use google and Wiki religiously

here's a link for ya about cfl's
Compact fluorescent lamp - Wikipedia, the free encyclopedia

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kkinggong

ok thanks to sticky i think i found what i need but due to the fact that i was asleep all of the time during math class and the equal to or grater than thing wasn't my thing, i cant really decode this but iam guessing that warm/soft white and daylight are the ones iam wanting to get right??
Color temperature kelvin mired
'Warm white' or 'Soft white' ≤ 3000 K ≥ 333 M
'White' or 'Bright White' 3500 K 286 M
'Cool white' 4000 K 250 M
'Daylight' ≥ 5000 K ≤ 200 M

sticky_bud

higher the kelvin for veg growth and lower for budding get a mix or switch from one spectrum to the other...

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kkinggong

once again sticky gos for the kill thanks man

knna

There is a standard coding for fluorescent that notes the CCT (correlated color temperature, in K) integrated on a longer code.

That longer code is composed by two figures together. The first digit correspond to the CRI (Color Rendering Index). A 7 is for any CRI between 70 and 79, a 9 is for 90-99...

The two next digits are for the CCT. 27 stands for 2700K, 60 for 6000K, etc.

So if in the bulb there is a 830, it means it a bulb with CCT od 3000K and a CRI between 80 and 89.

A 960 means a CRI 90-99 and a CCT of 6000K.

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