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Originally Posted by fencer
I wondered about this too. I would think that they evaporate the seawater and collect the residual salt and add it to the wholesaler salt. Since trace elements are in the ppm to ppb range. I also imagine they add supplments to their salt to balance the composition. I have a hard time imagining that the use of evaporate sea salt can be uniform from batch to batch.
FYI...sort of related. I have seen in refineries that produce gasoline make blends for other companies. The refinery just adds the components that the buyer request in the gas. I would think by the same token many sellers of salt buy from the same wholesaler and the wholesalers just blends the trace components in as per the buyers request. It is possible that the salts inquestion share that same base stock.
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Yes that is what i was thinking as well. I don't really know anything about the salt manufacturing process but this is exactly what done fo engine oil. Esso manufactures about 10-12 different brands of engine oil at their refinery in Edmonton and just adds different additives for each companys specifications. but the base stocks are all the same (i suspect alot of the oils are very similar).
I am not familiar with the area where this salt is being evaporated at all, but in general wouldn't the salt water be affected seasonlly based on the currents and plankton blooms etc. Just curious how the manufacturing process maintains a consistent product.