Description
Specifications Table
Product Name – Density standard, 0.7073 g/ml at 15 °C
Quantity/Pack Size – 100 ml
Form – Liquid
Grade – Certified Reference Material (CRM)
Application – Density calibration, hydrometer testing, volumetric analysis
Product Overview
This density standard, certified at 0.7073 g/ml at 15°C, is a high-accuracy reference material designed for precise density calibration in laboratory settings. Formulated with ultra-pure components, it ensures minimal batch-to-batch variation, providing consistent and reliable measurements for critical applications. The standard is NIST-traceable, guaranteeing compliance with international metrological standards, and is packaged in a sealed, contamination-resistant container to maintain long-term stability. Its low thermal expansion coefficient minimizes temperature-induced errors, while the non-volatile composition prevents evaporation-related concentration changes. Ideal for hydrometer calibration, pycnometer testing, and volumetric analysis, this standard eliminates systematic errors in density determinations. The liquid form allows easy handling and dispensing, reducing waste and ensuring cost-effective usage. Each batch undergoes rigorous quality control, including multi-point density verification, to confirm adherence to the certified value. The accompanying certificate of analysis provides full traceability, uncertainty statements, and recommended usage conditions for optimal performance.
FAQs
1. What is the shelf life of this density standard when stored properly?
When stored in its original sealed container at room temperature (15-25°C) away from direct sunlight, this density standard maintains its certified value for at least 24 months from the date of manufacture. The non-volatile formulation minimizes evaporation, preserving accuracy over extended periods.
2. How does temperature affect the 0.7073 g/ml certification?
The certified value of 0.7073 g/ml is specified at 15°C. Density varies with temperature due to thermal expansion, with an approximate change of 0.0008 g/ml per °C for this standard. For precise work, use the temperature correction factor provided in the certificate of analysis or maintain samples at the reference temperature.
3. Can this standard be used with automatic density meters?
Yes, this density standard is compatible with most automatic density meters, including oscillating U-tube and vibrating element instruments. Its low viscosity and non-corrosive nature prevent damage to sensitive measuring cells. For best results, follow the meter manufacturer’s guidelines for reference material selection and calibration procedures.
4. What materials are used in the packaging to prevent contamination?
The standard is packaged in Type I borosilicate glass bottles with PTFE-lined polypropylene caps, ensuring chemical inertness and minimal leachable contaminants. The glass undergoes a proprietary cleaning process to remove surface impurities, while the PTFE liner provides an effective vapor barrier to prevent atmospheric moisture ingress.
5. Is this standard suitable for pharmaceutical quality control applications?
While primarily designed for physical density measurements, this standard meets the purity requirements for many pharmaceutical QC applications. It contains no heavy metals or organic impurities above 1 ppm, and the certificate of analysis includes ICP-MS data for common elemental contaminants. However, for GMP-compliant applications, additional documentation may be required.
