BS & W analyzer for Desalting Packages

Hi all,

Actually this is the first time I'm dealing with BS&W Analyzer in Desalting Packages. As far as I could find, two different types are available. One measures only the BS&W on-line and salt shall be examined in Lab.
The other one measures salt content online as well as BS&W.
I wonder if anyone can kindly advise reliable manufacturers for both of these systems and any comment regarding them and their performance.

Thanks

Salar