From Guild Wars 2 Wiki
Solvent Sprayers were designed by the Lionguard to combat the karka infestation at Lion's Arch and Southsun Cove. They can be found in weapon crates stashed near the island's settlements. Similar in operation to a flamethrower, they spray a toxic solvent that can be detonated when mixed with a special catalyst. While powerful, the weapon has a severely limited amount of ammunition.
|1||Poison Spray||2¼||Spray Lionguard solvent in a cone pattern while on the move, inflicting conditions on the final attack.|
|2||Lob Solvent||6||Lob a glob of solvent at the target location to slow targets that pass through it.|
|3||Air Blast||15||Push back foes and projectiles with a hot air blast.|
|4||Volatile Catalyst||2¼||20||Spray a volatile catalyst on the target, causing an explosion if the target is poisoned.|
|5||Overload Gun||¾||1||Overload the solvent sprayer, detonating it and spraying solvent on all targets in range.|