NSK8700
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I have not searched enough/researched, but my immediate need is to clarify the following in the context of pH electrodes, metallic electrodes and conductivity cells, particularly as regards the way they are conceived/ designed, [WARNING] my queries may be naive [WARNING]:
(1a) Often a vendor mention's pH electrodes as a "COMBINED pH electrode", what could/ does the manufacturer imply by the term "COMBINED" ? (1b) What limits the maximum pH scale to 14 (max) (1c) What typically delimits the electrode construct dimensions (2) In a particular construct what contributes to the Resistivity of such pH electrodes [typically 200-300MegaOhm] What determines the operating temperature specification of such electrodes and what is rationale for using 'KCl' as the reference electrolyte.(3) On what basis is the choice of electrode metal in metallic electrodes done, vis-a-vis, Platinum,Gold,Silver,Antimony,Tungsten electrodes,is there a reference chart as to their appropriate utilization/ applications.(4)What factors enhance or influence precision in such electrodes and the typical potential I would also appreciate some novel or unusually applied experiments that could qualify for Junior or Senior college project(s).
(1a) Often a vendor mention's pH electrodes as a "COMBINED pH electrode", what could/ does the manufacturer imply by the term "COMBINED" ? (1b) What limits the maximum pH scale to 14 (max) (1c) What typically delimits the electrode construct dimensions (2) In a particular construct what contributes to the Resistivity of such pH electrodes [typically 200-300MegaOhm] What determines the operating temperature specification of such electrodes and what is rationale for using 'KCl' as the reference electrolyte.(3) On what basis is the choice of electrode metal in metallic electrodes done, vis-a-vis, Platinum,Gold,Silver,Antimony,Tungsten electrodes,is there a reference chart as to their appropriate utilization/ applications.(4)What factors enhance or influence precision in such electrodes and the typical potential I would also appreciate some novel or unusually applied experiments that could qualify for Junior or Senior college project(s).
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