A question about the Alchemist Plague Bomb Discovery

[memorax]

I have a player who is using a Alechemist in one of my games. He is at the level where he can get the Plague Bomb. What is the DC to save against his bomb? Is it the DC of the caster? Or the DC of the Disease? Since the description of the Plague Bomb says it copies the effect of the Contagion spell.

[darkwarriorkarg]

Dot

[The smitter]

it is the DC of his bombs (10+1/2lvl+int mod)

[memorax]

The smitter wrote:

it is the DC of his bombs (10+1/2lvl+int mod)

So the intial DC is from his Bombs. Then it is the save DC of the disease correct.