Salinity probe calibration question

[unbreakable]

I purchased a conductivity/redox card along with a conductivity probe. I followed instructions but used 53.0 mS fluid and took the temperature reading from the fluid and placed it in the display when it was asking for the temp.

I notice the reading is lower on the profilux after calibration, 32.0 ppt while my refractometer is showing 35 ppt. refractometer was calibrated by the same solution

is this reading normal?

[unbreakable]

went ahead and did an offset value