[ccp4bb] A question on the diffrentiattion of the salt crystal and salt diffraction in the protein metal complex

[Acoot Brett]

Dear All, 
 
Suppose I have a crystal hit from the protein-metal complex, with the 
possibility of that the hit is a salt crystal. When I diffract it by X-ray, I 
got some metal (or salt) diffraction without the protein diffraction (maybe due 
to too low protein resolution). Will you please tell me how to know whether my 
diffraction was from a salt crystal or from the diffraction of the metal in my 
protein-metal complex?
 
I am looking forward to getting your reply.
 
Cheers,
 
Acoot