Description
Specifications Table
Product Name – Refractive index standard at 20 °C, stabilized sucrose
Quantity/Pack Size – 15 ml
Form – Liquid (aqueous sucrose solution)
Grade – Certified Reference Material
Application – Refractometry, optical density verification
Product Overview
This stabilized sucrose refractive index standard is engineered for consistent performance at 20°C, providing a reliable benchmark for refractometer calibration and optical density measurements. The aqueous sucrose solution undergoes proprietary stabilization to resist microbial growth and evaporation, ensuring long-term accuracy without preservatives that could alter refractive properties. Packaged in a 15 ml amber glass bottle with a tamper-evident seal, the standard protects against UV degradation while maintaining its certified value. The formulation adheres to ISO 17034 requirements for reference materials, with each batch tested for homogeneity and stability under accelerated aging conditions. Its low viscosity facilitates easy dispensing and cleaning, while the 20°C specification aligns with most laboratory temperature controls. The included certificate details measurement uncertainty and traceability to primary standards, supporting GLP/GMP compliance for quality-critical workflows.
FAQs
1. Does this standard require recalibration over time?
No recalibration is needed if stored properly; the stabilized formula maintains its certified value throughout the 24-month shelf life.
2. Is this compatible with Abbe refractometers?
Yes, the standard’s viscosity and refractive index range are optimized for Abbe refractometers and other prism-based systems.
3. What precautions prevent contamination during use?
Use a clean dropper for each measurement and reseal the bottle immediately to avoid moisture absorption or particulate ingress.
4. How does temperature affect measurement accuracy?
A 1°C deviation from 20°C introduces approximately ±0.0002 refractive index units error; use a water bath for precise temperature control.
5. Can this replace primary standards like NIST SRM 1920?
While traceable to NIST, this is a secondary standard for routine calibration; primary standards are recommended for initial instrument qualification.
