Glass for use in a ph - sensitive membrane of a glass electrode, with only a small matrium - error

摘要

A glass electrode includes a r H-responsive glass membrane consisting essentially, in mole per cent, of: Li2O, 27-29; CS2O and/or Rb2O, 2-4; rare earth metal oxide or oxides, 4-7; UO2, 1-3, and/or Ta2O5, 1-3; balance, SiO2. The rare earth metal oxide may be, e.g. La2O3 or Pr2O3. The components may be added, e.g. as oxides, hydroxides, carbonates or nitrates.