[SmokeEquation]

Hey guys and gals,
I am having a bit of trouble figuring out what is happening with my quality values when I am analyzing water samples for silver (Ag).  I use a recipe to make multiple solutions of varying concentrations for my CCC (300ppb) and QC (200ppb) each from a different source.  However, when I am running a line fit for my samples it shows that the samples are around 1700ppm and 1500ppm.
I don't think I have any contamination within the system as I have cleaned the entire system and flushed out the appropriate parts.
Why are my silver counts high for my silver quality standards and how would I get them back into the normal range.

I am open to any suggestions as to how to fix my problem!!!
If anyone has any questions regarding my problem I would be happy to clarify!
Thanks in advance!