LED Fluorescent Powder with High Brightness
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 kg
- Supply Capability:
- 100000 kg/month
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Description of LED Fluorescent:
Extensive usage: it applies to various LED encapsulation from cool white to warm white. The rendering index can be up to 98 with red powder.
Festures of LED Fluorescent:
The powder is a kind of yellow phosphor for LED encapsulation use with the characteristics of high brightness,good stability and no harm to human and environment, which is fired through special manufacturing techniques. This kind of powder is quite applicable to the encapsulation of high color rendering white LED or other lighting appliances.
Specifications of LED Fluorescent:
Appearance: Yellow crystalline powder
Chemical composition: Rare earth aluminate
Physical stability: waterproof and heatproof. No any changes under -50°C to 300°C in the air.
Chemical stability: under 200°C, brightness >90%; within 1000 hours after encapsulation, brightness decay
Safety: Conform to the RoHS {EU (Restriction of Hazardous Substances)} and all security standards. Non-poisonous, non- radioactivity and do no harm to human and environment.
Images of LED Fluorescent:
FAQ:
1.When can i get the price quotation?
We can send you the quotation within 24hours after your inquiry, including the shipping cost if you need.
2.What about payment term?
30% T/T deposit, balance against B/L copy.
Full T/T payment if quantity less than MOQ.
3. What’s your after-sales service?
One-year warranty, and 1% common accessories.
- Q:What does the word pigment mean?
- meant to be a pig. :)
- Q:What are the roles and type of plant pigments?
- Pigments are able to absorb specific wavelengths of light which power photosynthesis. Chlorophyll, which is green, absorbs all wavelengths except green. Each photon excites an electron in the light harvesting complexes of a photosystem in a chlorophyll molecule, eventually producing ATPs. Other pigments will be a different color and will be able to absorb other wavelengths, maximizing energy absorbency when the sun's rays change. Pigments are chemicals inside living things that absorb certain types of light. In plants, the pigment chlorophyll in leaves absorbs sunlight for photosynthesis to work, where the energy comes from. Chlorophyll absorbs all light except green, which is reflected. That's why most plants are green...
- Q:i got some pigments off of ebay and i received two of them but they have a funny smell to them? are they supose to?
- Buying okorder /... Good luck dear! If all else fails, I suggest going on specktra and asking on there. It's a MAC and make-up community forum and they're extremely helpful and informative when it comes to anything MAC!
- Q:explain an absorption spectrum of different pigments and the action spectrum ofphotosynthesis.
- A pigment is any substance that absorbs light. The color of the pigment comes from the wavelengths of light reflected (in other words, those not absorbed). Chlorophyll, the green pigment common to all photosynthetic cells, absorbs all wavelengths of visible light except green, which it reflects to be detected by our eyes. Black pigments absorb all of the wavelengths that strike them. White pigments/lighter colors reflect all or almost all of the energy striking them. Pigments have their own characteristic absorption spectra. The action spectrum of photosynthesis is the relative effectiveness of different wavelengths of light at generating electrons. If a pigment absorbs light energy, one of three things will occur. Energy is dissipated as heat. The energy may be emitted immediately as a longer wavelength, a phenomenon known as fluorescence. Energy may trigger a chemical reaction, as in photosynthesis. Chlorophyll only triggers a chemical reaction when it is associated with proteins embedded in a membrane (as in a chloroplast) The familiar colors of the rainbow in the spectrum include all those colors that can be produced by visible light of a single wavelength only, the pure spectral or monochromatic colors.
- Q:If they are not the same, then what is the difference? Please help me out here.
- Yes, tannins are pigments but they aren't really the main plant pigment. Plant pigments usually refer to photosynthetic pigments (chlorophyll, carotenoids, etc.). These photosynthetic pigments give the leaves their green color (or yellow/orange in the fall). Tannins are non-photosynthetic phytochemical (involved in plant metabolism and internal functioning), but they are also a pigment. Tannins (and lignins) are brown. This is was gives dead leaves and wood their color. Tannins also leach out of the leaves when soaked in water (same process as brewing a cup of tea). So tannins are pigments when they leach out of leaves and stain water (or other things) brown, but they are not photosynthetic plant pigments. In other words, it depends on what context you are calling a tannin a pigment. In a live plant they are not a pigment (judgment call here). In a dead leaf or when they leach out of a leaf they are a pigment.
- Q:PLEASE TRY!, to awnser ANY of the questions below.~What factors cause leaves to change colors. Where do these colors come from?~What are the names of the specific chemical pigments that cause the colors we see (reds, yellows, purples, browns, greens etc.) These are the same pigments (chemical that causes color) that give fruit their different colors.~What is the process (how it happens) that cause leaves to fall off of the branches. Explain at the cell level. (picture)Please try to awnser. Thanks.
- 1. Changes in pigment compsition is the primary reason for the changes in the colour observed during different developmental stages of leaves. 2. Each pigment has the property of absorbing light rays of certain wave lengths and reflecting rays of certain wave length. This is called chromatic property of the pigment. For example Chlorophyll absorbs all wavelengths and reflects green wave lengths. Hence it appears green in colour. Therefore the colour is in the light rays and not in the pigment. 3.Reds= Phycoerythrin; Yellows= Xanthophylls; Purples= Anthocyanins; Browns= different combinations of red and yellow pigments; greens= Chlorophylls; Blue= Phycocyanins. 4. Yes 5. The process of leaf fall is called Abcission. Leaf os an organ of definitive growth. It grows to its maximum size and becomes scenescent. Once scenescence sts in, all cellular materials that can be used elsewhere are translocated to other growing parts and the leaf becomes yellow. The water supply to the leaf is cut off. The phloem also becomes non-functional. At this stage a special layer called Abcission layer is formed at the base of leaf near the point of atachment to the stem. The abcission layer produces cork cells which plug the region. The layers of cells above the cork layer become deprived of water and food and die forming Separation layer. At this stage the leaf is attached to the base only by the xykem cells. By its shere weight the leaf breaks and falls. The most important point about abcission is that the exposed part of the leaf base is covered by cork layer which is impervious to entry of pathogens! Refer to any Plant Anatomy book for a diagram to show the longitudinal section of the abcission layer.
- Q:what is one reason why plants have accessory pigment molecules like chlorophyll b and carotenoids?
- They have different absorption maxima to chlorophyll a and so these accessory pigments make light absorption more efficient by absorbing some wavelengths not absorbed by chlorophyll a and thus provide a greater input of light into the reaction centres.
- Q:I need to find powdered paint or pigment that I can throw, for some photographs.Preferably cheap, and that wouldn't stain skin.I've looked into powder paint, though this tends to stain skin for about a week.Thanks :)
- but I'm sure there must be retailers in the West as there are so many Asian communities worldwide.
- Q:Know this ounds kinda obvious but just wanted to confirm, is there more pigment in the middle of the beetroot than on the edges?
- I've known it to be in the skin and thats from a cooking point of view.
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LED Fluorescent Powder with High Brightness
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 kg
- Supply Capability:
- 100000 kg/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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