Turbidity 1 NTU
| CAS number | 10034-93-2 |
| HS Code | 38220090 |
| EC number | 231-791-2 |
| Storage | Store at 2°C to 8°C |
| SDS | available |
| Odour | characteristic |
| Form | liquid |
| Boiling point | 101 °C (1013 hPa) |
| Turbidity@ 25°C | 1.0 ± 0.02 | NTU | |
Turbidity Standard Solution 1 NTU is a pharmacopeial-grade reference solution designed for use in pharmaceutical quality control, water system monitoring, and analytical laboratories for the calibration and performance verification of turbidimeters and nephelometers that measure very low turbidity levels in aqueous systems such as Purified Water, Water for Injection (WFI), and laboratory reagent water.
🏭⚗️ Production
Prepared under strictly controlled GMP- and pharmacopeial-compliant conditions to ensure precise turbidity, chemical stability, and minimal contamination. The 1 NTU turbidity value is achieved using stabilized formazin or equivalent polymeric dispersions that provide uniform light-scattering properties. The solution is supplied in chemically resistant, sealed, and light-protected containers to prevent particle settling, photodegradation, or contamination. Each batch is validated according to USP <857>, EP 2.2.1, and pharmaceutical water testing standards to ensure accuracy, uniformity, and reproducibility.
🔬 Properties
A clear to slightly opalescent suspension with a defined turbidity of 1 NTU. Exhibits excellent stability under recommended storage conditions. Minor particle settling may occur after prolonged storage or exposure to extreme temperatures or light; gentle inversion restores homogeneity without affecting turbidity value.
🧪 Applications
Used in pharmaceutical, environmental, and analytical laboratories for calibration, validation, and performance testing of instruments measuring very low turbidity levels. Suitable for method validation and quality control in PW, WFI, clean steam condensate, and laboratory reagent water systems. Ideal for equipment qualification (IQ/OQ/PQ), routine QC analysis, and compliance with pharmacopeial water testing standards requiring low-range turbidity references.
⚠️ Safety
Considered low-hazard but should be handled according to standard laboratory safety practices. Avoid ingestion, inhalation of aerosols, or 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.





