pH Electrode Filling Solution
| Density | ~ 1.02 g/cm3 (20°C) |
| HS Code | 38220000 |
| Storage | Storage at 15 to 25°C |
| SDS | available |
| R phrase: | R 36/38 |
| S phrase: | S 26 |
| Odour | odourless |
| Form | liquid |
| Color | colourless |
| Solubility in water | soluble( 20°C ) |
pH Electrode Filling Solution is a pharmacopeial-grade reference solution designed for use in pharmaceutical quality control, laboratory calibration, and analytical testing for the maintenance, filling, and performance verification of pH electrodes, including combination and reference electrodes.
🏭⚗️ Production
Prepared under strictly controlled GMP- and pharmacopeial-compliant conditions to ensure precise ionic strength, chemical stability, and minimal contamination. The solution is typically composed of high-purity potassium chloride (KCl) or similar salts dissolved in deionized water, providing stable ionic conductivity and reference potential. The solution is supplied in chemically resistant, sealed, and light-protected containers to prevent contamination, evaporation, or degradation. Each batch is validated according to USP <791>, EP 2.2.3, and relevant pharmaceutical testing standards to ensure accuracy, uniformity, and reproducibility.
🔬 Properties
A clear, colorless aqueous solution with a defined ionic strength, ensuring stable and reproducible reference potential for pH electrodes. Exhibits excellent stability under recommended storage conditions. Minor changes in ionic concentration may occur after prolonged storage; gentle mixing restores homogeneity without affecting electrode performance.
🧪 Applications
Used in pharmaceutical, analytical, and educational laboratories for filling, maintenance, calibration, and performance testing of pH electrodes. Suitable for method validation, routine QC analysis, equipment qualification (IQ/OQ/PQ), and compliance with pharmacopeial standards requiring stable pH reference systems. Ideal for ensuring accurate pH measurements in formulation development, process control, and laboratory research.
⚠️ Safety
Considered low-hazard but should be handled according to standard laboratory safety practices. Avoid ingestion, inhalation, and direct contact with skin and eyes. Use appropriate personal protective equipment, including gloves, goggles, and a lab coat. Store in tightly sealed, light-protected containers in a cool, dry environment. Dispose of according to pharmaceutical laboratory waste regulations and environmental safety guidelines.
