Sodium Ethanoate is a concentrated stock solution and should be diluted appropriately with distilled, deionized water or equivalent to its final working concentration. This buffer contains 3.0 M Sodium Acetate at pH 5.2 meticulously prepared using ultra pure reagents dissolved in highly polished pharmaceutical grade deionized water. Visit our newly expanded web site at www.rockland-inc.com for methods using this and other buffers.