Description
Specifications Table
Product Name – Density standard, 0.9438 g/ml at 25 °C
Quantity/Pack Size – 100 ml
Form – Liquid
Grade – Certified Reference Material (CRM)
Application – Calibration of densitometers, pycnometers, hydrometers
Product Overview
This density standard (0.9438 g/ml at 25°C) is a high-precision liquid reference material designed for laboratory calibration and quality control. Formulated with ultra-pure components, it provides exceptional stability and reproducibility, ensuring accurate density measurements across various analytical instruments. The standard is NIST-traceable, guaranteeing compliance with international metrology standards. Its low thermal expansion coefficient minimizes temperature-induced variations, while the hermetically sealed packaging prevents contamination and evaporation. The solution is compatible with glass and stainless steel apparatus, making it ideal for gravimetric and volumetric applications. Each batch undergoes rigorous testing to verify its density value, with a certificate of analysis provided for documentation. The standard’s long shelf life and resistance to microbial growth further enhance its reliability for routine laboratory use.
FAQs
1. What is the shelf life of this density standard?
When stored unopened in its original packaging at 15-25°C, this density standard maintains its certified value for 24 months from the date of manufacture.
2. Can this standard be used with automatic densitometers?
Yes, the liquid formulation is fully compatible with both manual and automatic densitometers, including oscillating U-tube and digital models.
3. How should I handle temperature variations during use?
Allow the standard to equilibrate to 25°C in a water bath for 30 minutes before measurement, and avoid direct sunlight or heat sources during calibration.
4. What alternatives exist for higher density ranges?
For densities above 1.000 g/ml, consider our aqueous potassium iodide solutions or organic-based standards like bromobenzene derivatives.
5. Is recalibration required after opening the bottle?
No, but ensure the cap is tightly sealed after each use to prevent solvent evaporation, which could alter the density value over time.
