Horiba Internal Filling Solution 3.33 M KCl

Horiba Internal Filling Solution 3.33 M KCl for pH Combination Electrode, 250 mL (525-3)

The Horiba 525-3 Internal Filling Solution is a 3.33 M potassium chloride (KCl) solution designed for use with pH combination electrodes that require internal electrolyte filling. Horiba formulates this solution to maintain a stable reference potential and ensure accurate, reproducible pH measurements during routine laboratory and field analysis.

This internal filling solution supports proper ion flow between the reference electrode and the sample through the liquid junction. By maintaining optimal electrolyte concentration, the solution helps reduce measurement drift and improves electrode response stability. Users can refill compatible pH combination electrodes easily to extend electrode service life and maintain consistent performance.

The 250 mL bottle provides sufficient volume for multiple refilling cycles and suits routine maintenance in laboratories, quality control environments, educational facilities, and industrial testing applications. The solution works with a wide range of Horiba refillable pH combination electrodes.

Key Features

• Internal filling solution for pH combination electrodes

• 3.33 M KCl formulation for stable reference potential

• Supports accurate and reproducible pH measurements

• Helps reduce measurement drift and improve response stability

• Suitable for refillable pH electrodes

• Ready to use with no preparation required

• Supplied in a 250 mL bottle for routine maintenance

Technical Specifications

• Product type: Internal filling solution

• Composition: 3.33 M potassium chloride (KCl)

• Application: Refill solution for pH combination electrodes

• Volume: 250 mL

• Model code: 525-3

• Formulation: Ready-to-use electrolyte solution

Applications

• Refilling pH combination electrodes

• Routine pH electrode maintenance

• Laboratory and quality control testing

• Environmental and water quality analysis

• Educational and industrial applications