Name of the primary CRM | CRM and batch No. | Certified characteristic | Certified value range | Expanded uncertainty of the certified value (P = 0.95), % | Area of application in titrimetry |
CRM for composition of potassium hydrogen phthalate | GSO 2216-81 (batch 14, 2012) | Mass fraction of potassium hydrogen phthalate | 99.90 - 100.00 | 0.018 | Acidimetry |
CRM for composition of sodium carbonate | GSO 4086-87 (batch 2, 2014) | Mass fraction of sodium carbonate | 99.95 - 100.00 | 0.028 | Alkalimetry |
CRM for composition of potassium dichromate | GSO 2215-81 (batch 16, 2011) | Mass fraction of potassium dichromate | 99.95 - 100.00 | 0.018 | Oxidimetry |
CRM for composition of sodium oxalate | GSO 3219-85 (batch 7, 2001) | Mass fraction of sodium oxalate | 99.95 - 100.00 | 0.03 | Reductometry |
CRM for composition of trilon B (disodium salt of ethylene- diamintetraacetic acid) | GSO 2960-84 (batch 11, 2009) | Mass fraction of trilon B (disodium salt of ethylendiamin- tetraacetic acid) | 99.70 - 100.00 | 0.03 | Complexonometry |
CRM for composition of sodium chloride | GSO 4391-88 (batch 3, 2012) | Mass fraction of sodium chloride | 99.90 - 100.00 | 0.024 | Sedimentometry |
CRM for composition of ethylene- diamintetraacetic acid | GSO 9655-2010 (batch 1, 2010) | Mass fraction of ethylendiamin- tetraacetic acid | 99.70 - 100.00 | 0.05 | Complexonometry |
CRM for composition of hydrochloric acid solution | GSO 9654-2010 (batch 2, 2013) | Molar concentration of hydrogen ions, mole/dm3 | 0.099 - 0.110 | 0.037 | Acidimetry |
CRM for composition of potassium chloride | GSO 9969-2011 (batch 1, 2012) | Mass fraction of potassium chloride | 99.90 - 100.00 | 0.024 | Sedimentometry |