Description
Specifications Table
Product Name – Refractive index standard, 20 °C, 1.43080 (stabilized sucrose)
Quantity/Pack Size – 15 ml
Form – Liquid
Grade – Analytical
Application – Refractometer calibration, optical measurements
Product Overview
This refractive index standard (1.43080 at 20°C) is a stabilized sucrose solution designed for precise calibration of refractometers and optical instruments. The formulation ensures long-term stability, minimizing evaporation or degradation that could affect accuracy. The solution is prepared under controlled conditions to meet analytical-grade purity standards, making it suitable for applications requiring high repeatability. The refractive index is certified at 20°C, providing a reliable reference point for temperature-dependent measurements. Packaged in a sealed 15 ml bottle, it prevents contamination and preserves integrity during storage. The standard is compatible with most laboratory refractometers, including Abbe, digital, and handheld models. Its clarity and homogeneity eliminate measurement errors caused by particulate matter or air bubbles. For optimal performance, store the bottle upright in a cool, dry environment away from direct sunlight. The solution’s viscosity and surface tension are optimized to ensure smooth application on prism surfaces without residue formation.
FAQs
1. What is the shelf life of this refractive index standard?
The stabilized sucrose formulation maintains accuracy for up to 24 months when stored unopened at room temperature. Once opened, use within 6 months for best results.
2. Can this standard be used with automated refractometers?
Yes, the solution is compatible with automated systems, provided the instrument’s prism is cleaned before application to avoid cross-contamination.
3. How does temperature variation affect the refractive index?
The standard is certified at 20°C. For every 1°C deviation, the refractive index changes by approximately 0.0001 units. Use a temperature-controlled environment for critical measurements.
4. Is this standard traceable to NIST or other metrological institutes?
The refractive index value is verified against primary standards but is not directly NIST-traceable. For traceable certification, consider third-party calibration services.
5. What precautions should be taken during handling?
Avoid skin contact and use in a well-ventilated area. The bottle’s dropper cap allows controlled dispensing—do not pipette directly from the container to prevent contamination.
