Phosphor Weapons range from the hand-held Phosphor Serpenta favoured by many Tech-priests to the Heavy Phosphor Blaster mounted upon the Adeptus Mechanicus' Kataphron Battle Servitors. The burning white spheres that shoot out from Phosphor Weapons cling tenaciously to their targets, sizzling wildly as they melt into flesh or burrow through armour and exoskeleton alike. More often than not, it is these luminagenic orbs that deal the death blow. Even if a target proves tough enough to survive the burning pain, the phosphorescent glow these spheres exude can guide an ally's volley to strike the same target.
- Codex Adeptus Mechanicus - Cult Mechanicus (7th Edition) (Digital Edition), pg. 233