Purple acid is a hazard in the game Slime Laboratory.
Purple acid is a purplish pink that resembles waves. The very top of the purple acid is surrounded by a dark brown outline.
Purple acid first appears in level 3 and is often found in vats and sometimes it is below spinning platforms. In some levels purple acid will start rising from the ground and will submerge platforms and kill slime on contact. Though in these levels if slime gets killed, the purple acid will go down to a certain point and then continue rising. If slime touches purple acid, it will instantly die.