Blood Bank-Block

UV Glow- Red with no glitter (glows red).

Blocks measure 3" x 2 1/2" x 1/8" (approx).

UV glow= 15+ minutes (Orange) to 12+ hours (green) as manufacturer states. After testing these out, the aqua seems to have the steadiest glow, green does burn the longest and although dark blue lasts long, it's sometimes hard to tell because it's dark.

It is recommended to use a UV light on all UV glow products to speed up glow process