Artificial Sea Water (from Methods in Cell Biol. Vol. 74)
Per Liter:
28.3g NaCl
0.77g KCl
5.41g MgCl2•6H2O
3.42g MgSO4 or 7.13g MgSO4•7H2O
0.2g NaHCO3
1.56g CaCl2 dihydrate (add last)
adjust pH to 8.2, salinity should be in the range of 34-36 ppt