How to calculate Salt concentration in mM scale for any given solution? - (Oct/07/2008 )

Dear all,
A buffer I am using is:
65 mM Tris-Hcl
0.5% SDS
Is the salt concentration 65 mM then?

How about PBS?, which, for a liter, has
8g of NaCl
0.2g of KCl
1.44g of Na2HPO4
0.24g of KH2PO4

should I just simply calculate the molar concentration of each and plus these four together to get the salt concentration of the whole buffer?

thanks

Dear all,
A buffer I am using is:
65 mM Tris-Hcl
0.5% SDS
Is the salt concentration 65 mM then?

How about PBS?, which, for a liter, has
8g of NaCl
0.2g of KCl
1.44g of Na2HPO4
0.24g of KH2PO4

should I just simply calculate the molar concentration of each and plus these four together to get the salt concentration of the whole buffer?

thanks