Description
Specifications Table
Product Name – Density standard, 0.6993 g/ml at 25 °C
Quantity/Pack Size – 100 ml
Form – Liquid
Grade – Certified Reference Material (CRM)
Application – Pycnometer calibration, hydrometer verification, density meter standardization
Product Overview
This high-precision density standard (0.6993 g/ml at 25°C) is a certified reference material designed for laboratory applications requiring exact density measurements. Formulated with ultra-pure components, it offers a certified accuracy of ±0.0002 g/ml, ensuring reliable calibration of pycnometers, hydrometers, and digital density meters. The solution is stable under standard lab conditions and comes with a certificate of analysis traceable to NIST standards, providing documented proof of its precision. Its low thermal expansion coefficient minimizes temperature-induced variations, while the non-volatile composition prevents evaporation losses during prolonged use. The 100 ml packaging in amber glass bottles with PTFE-lined caps ensures long-term stability and contamination protection. This density standard eliminates measurement uncertainties in quality control, research, and industrial testing where density accuracy is critical. The material undergoes rigorous homogeneity testing to guarantee consistent performance across the entire batch, with each unit individually serialized for traceability.
FAQs
1. What is the shelf life of this density standard when stored properly?
The density standard maintains its certified accuracy for 24 months from the date of manufacture when stored unopened in its original packaging at 15-25°C, protected from direct sunlight and moisture. Once opened, use within 6 months for optimal performance.
2. Can this standard be used with automatic density meters?
Yes, this density standard is fully compatible with all major brands of automatic density meters including Anton Paar, Mettler Toledo, and Kyoto Electronics. Its viscosity and surface tension properties are optimized to prevent air bubble formation during measurement.
3. What alternatives exist for density standards near 0.7 g/ml?
For applications requiring slightly different density values, we offer certified standards at 0.6985 g/ml and 0.7010 g/ml. These alternatives maintain the same ±0.0002 g/ml accuracy and are produced under identical quality control protocols.
4. How should I handle temperature variations during calibration?
The standard is certified at exactly 25.0°C. For measurements at other temperatures, use the provided temperature correction table in the certificate of analysis. We recommend using a water bath with ±0.1°C stability for critical applications.
5. Is this standard suitable for pharmaceutical quality control?
While primarily designed for physical property measurements, this density standard meets USP requirements for density determination of liquids. However, for pharmaceutical applications, we recommend our USP-grade density standards with additional documentation.
