If the assumption that 1 gram of hot sauce equals 1 mL of hot sauce then that math does sound correct for determining mg Na/5 mL hot sauce.
That said, I don't know how reliable that assumption is. Easiest way would be to precising weigh a known volume of finished hot sauce. I just tested with Tapatio and Tabasco and both sank readily in water, which means it is denser which means your mg/5mL is going to higher than your mg/mg. How much off, I have no idea (and your sauce may be less dense of course).
|