| http://www.w3.org/ns/prov#value | - Any suitable salt such as nitrate, sulfate, phosphate, carbonate, cyanate, acetate, benzoate, bromide, bicarbonate and such others, of sodium, potassium, calcium, lithium, barium, magnesium, aluminum, nickel, copper, bromide, chloride, iodide, fluoride and such others, but preferably sodium chloride or potassium chloride and all buffers such as phosphate, carbonate, bicarbonate or other buffers co
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