pH-measurement - pH-measurement of aqueous solutions with pH measuring chains with pH glass electrodes and evaluation of measurement uncertainty— 16 стр.
German standard methods for the examination of water, waste water and sludge - Physical and physico-chemical characteristics (group C) - Part 5: Determination of pH value (C 5)— 24 стр.
pH-measurement - pH-measurement of aqueous solutions with pH measuring chains with pH glass electrodes and evaluation of measurement uncertainty— 23 стр.