GE Monitor UPC-900 Operating Instructions Manual page 30

3 System description
3.4 pH electrode
Illustration
Part
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30
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Function
Sealing
Internal electrolyte bridge containing 4M KCl saturated with AgCl
Silicone sealing
Ag/AgCl reference electrode
Internal annular coaxial ceramic reference junction
External electrolyte bridge containing 1M KNO
O-ring
Glass electrode containing diluted, buffered KCl
O-ring
External annular coaxial ceramic reference junction
3
Monitor UPC-900 Operating Instructions 29-0567-16 AB