| http://www.w3.org/ns/prov#value | - Other types of buffering salts which will work include, but are not limited to, salts of alkaline hydroxides and relatively weak inorganic and organic acids such as sodium acetate, sodium formate, sodium citrates, mono-, di- or tri- sodium phosphates, mono-, di or tri- potassium phosphates, borates, e.g., borax, phthalates, bicarbonates and mixtures thereof.
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