DIN 19268 E:2020-08 pH-measurement - pH-measurement of aqueous solutions with pH measuring chains with pH glass electrodes and evaluation of measurement uncertainty
2021DIN 19268:2021 pH-measurement - pH-measurement of aqueous solutions with pH measuring chains with pH glass electrodes and evaluation of measurement uncertainty
1970DIN 19268 E:2020-08 pH-measurement - pH-measurement of aqueous solutions with pH measuring chains with pH glass electrodes and evaluation of measurement uncertainty
2007DIN 19268:2007 pH-measurement - pH-measurement of aqueous solutions with pH measuring chains with pH glass electrodes and evaluation of measurement uncertainty
0000 DIN 19268:2006
1985DIN 19268:1985 Measurement of pH value of clear aqueous solutions