Glow in the dark Pigment absorb all kinds of visible light, store it, and emit the brightness in dark environment. Its principle is electron transition.

Glow in the dark pigment with strontium aluminate base is eco-friendly, non-toxic, and non-radioactive. The last generation is with zinc sulfide base. It is polluted for the environment.

If it can still glow when UV light is switched off, it is Glow in the dark Pigment. If it cannot glow when UV light switched off, and it makes products more colorful and fresher, it is Fluorescent Pigment. If it only reflects the light, and cannot glow when UV light switched off, it is reflective pigment.

After fully charged, Glow in the dark Pigment can illuminate 8-12 hours in totally dark room. Its brightness will decay along with time goes by, so it cannot take place of electric light.

The charging and illumination is a physical cycle, not a chemical one. So it can circulate at least 20 years.

All the visible light can be charging source, including sunlight, lamp light, led light etc. The weaker light will get the weaker glow brightness.

Yes, longer charging will lead brighter glow. But the pigment can be fully charged under certain conditions. For example, under direct sunlight at noon for 10-15 minutes, the pigment will be full.

The environment is darker, the charging time is longer, the excitation light is stronger, the pigment particle is bigger, the dosage is higher, the medium is more transparent, all of them can lead brighter glow performance.

The Glow in the dark Pigment needs to be mixed with transparent and colorless liquid medium. It cannot be used with iron sticks to avoid friction when mixing. The granular is easy to settle down due to high specific gravity. It is better to use it soon after mixing.

The mediums include paint, ink, plastic, resin, silicon, rubber, glass, ceramic and etc.

To compare the quality, the first important factor is to confirm their granular size is the same, since the bigger size the brighter. Put the same sizes samples under the same light for the same charging time, and move them to dark room. Observing their brightness and afterglow time.