3 ms·

Too bad this can't be bought in Europe, the self-glowing stuff I've tried here (including tape) last only about a year, then it's useless.

• bjornsing 4y ago
  ”UltraGlow® powders are a new generation phosphorescent material with an astonishing glow time as long as 30 hours!”
  • CodeMage 4y ago
    It "recharges" when exposed to light.
  • genewitch 4y ago
    and the "glow time" is only to a value of .32mCd, which is, per their copy, "100x more luminescent than necessary to see with the naked eye" so more than 30 hours after being charge for 5 minutes in the sun.
• kyleblarson 4y ago
  What do you use it for?
• heeen2 4y ago
  https://www.amazon.de/gp/product/B0114G2SZ8/ref=ask_ql_qh_dp_hza?th=1 https://www.amazon.de/gp/product/B0114G2SZ8/ref=ask_ql_qh_dp... comments by the seller indicate that it is europium doted strontium aluminate - maybe some chemist can comment if this is the same stuff.
  • kortex 4y ago
    It's most likely the same chemical formula (so yes, "same stuff"), but phosphors vary quite a bit in their quality based on the synthesis conditions (maybe the "same stuff", or may be better/worse quality than UN's batch).
  • tmikaeld 4y ago
    Thanks, I'll try it!