lotalota wrote on Apr 6^th, 2007 at 4:15pm:

One note:  the powder/water mix wasn't as tasty as the commercial tomato juice.  I attribute this to there being salt in the commercial product. So if that is correct[...]

Yes.  Salt is definitely needed for a tastier product.

I have a friend that works in a company that cans a lot of different juices and she noted that low-salt tomato juices are bland and unappealing.  It requires salt to make it flavorful, no practical way around it she says.  Use the salt proportions on the commercial tomato juice.  Tomato itself has very low sodium so you won't have to consider its contribution to the total sodium content.

Remember to convert the mg sodium to mg sodium chloride for weighing.