Product Overview

The non-aqueous Ag/Ag+ reference electrode is designed for reference measurements in organic solutions. Unlike an aqueous Ag/AgCl reference electrode, it requires a non-aqueous filling solution containing a supporting electrolyte and silver ions, prepared according to the experimental system and added to the reference chamber.

Specifications

• CHI112 non-aqueous reference electrode: Φ4 × 45 mm.
• SHI112 non-aqueous reference electrode: Φ4 × 45 mm.
• 4 mm non-aqueous Ag/Ag+ electrode: Φ4 × 50 mm.
• 6 mm non-aqueous Ag/Ag+ electrode: Φ6 × 70 mm.
• R112 non-aqueous reference electrode: Φ4 × 55 mm.

Applications

• Electrochemical testing in organic electrolytes.
• Cyclic voltammetry, potentiostatic, and impedance experiments in non-aqueous systems.
• Organic synthesis, electrocatalysis, and materials-interface research.
• Customized electrochemical equipment requiring an Ag/Ag+ reference system.

Filling Solution Preparation

When using CHI112 or other non-aqueous Ag/Ag+ reference electrodes, prepare the filling solution according to the experimental system. It normally contains a supporting electrolyte and silver ions. A silver-ion concentration of about 10 mM is commonly used, but the exact composition must be compatible with the organic solvent and sample system.

Instructions for Use

1. Select the appropriate specification according to the cell depth and installation space.
2. Prepare a non-aqueous filling solution containing the supporting electrolyte and silver ions.
3. Add sufficient filling solution to the reference chamber.
4. Before use, hold the electrode upright and gently tap the tube to release internal bubbles.
5. Install the electrode in the cell and ensure stable contact between the salt bridge terminal and the sample system.

Precautions

• During measurement, keep the internal liquid level higher than the sample level to prevent reverse permeation.
• Avoid samples that react with the filling solution and form precipitates, which may block the porous ceramic junction.
• Clean the electrode and replace the filling solution regularly to keep the liquid pathway open.
• Some internal substances and salt bridge solutions may be toxic or corrosive. Follow laboratory safety procedures.

Storage and Care

• For short-term storage, place the electrode in a solution matching its internal filling solution.
• For long-term storage, cover the protective cap and store the electrode away from light.
• Add a salt bridge when required to extend, buffer, and protect the reference system.
• If the salt bridge solution matches the filling solution, electrode contamination may be reduced. If it matches the sample, the sample system may be better protected.

Frequently Asked Questions