16.4.3.2 Material
• An over-saturated and thoroughly degassed KCl solution
• Salt bridge REF tool (700013145), or a stainless steel rod of about 5 cm in length and 1 mm
in diameter
• Ordinary cotton wool
16.4.3.3 Procedure
Note:
Use proper eye and skin protection when working with solvents.
1. Turn the cell OFF on the controller.
2. Stop the HPLC pump.
3. Disconnect the cell from the controller.
4. Remove the REF from the inlet block.
5. Disassemble the REF by unscrewing the black fitting.
6. Inspect the O-ring for wear, and especially the cotton wool frit. Replace if necessary.
Figure 16–21: Exploded view of the reference electrode
Swivel for REF
Ag/AgCl ele fitting
Vyton ring (small)
Salt bridge
Vyton ring (large)
REF cap for storage and shipment
Note:
The arrow indicates the tip of the AgCl-coated silver rod.
7. Remove the remaining KCl from the salt bridge.
December 16, 2021, 715007395 Ver. 00
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