Thanks for the response. To answer your question, it's not critical to remove all the salt, but a good amount of it would be the aim. The reason is because nearby there's a salt source that would at one time have been a sea bed, and with the way it makes me feel when eating it, I have a suspicion it has a great mineral profile. Popular belief is that salt is bad for you, and it is my contention that it's an imbalance of minerals that is bad for you, and that the 'mono salt' you get in the shops is what they're really referring to (since it would create an potassium/sodium inbalance). Anyhow, rather than try to change anyones thinking on that, I just thought if we could remove the sodium it would be much more widely accepted as a health mineral supplement. If I can remove the NaCl then I'd send it to a lab for assay to see if it has an appropriate profile (the sea and the blood minerals having a fair degree of correlation). The lab isn't cheap (USD equivalent of around $30 per mineral test, so testing for the vast majority, as well as any farming chemicals that could potentially leech through from the surface, I want to give them a decent sized sample of what would be the finished product (even if this batch was done kitchen sink style). If I can define a process for the product then we can have a GMP manufacturer produce it for us according to that process.