Description
Specifications Table
Product Name – Refractive index standard, 20 °C, 1.39032 (stabilized sucrose)
Quantity/Pack Size – 15 ml
Form – Liquid
Grade – Analytical
Application – Refractometer calibration, optical measurements
Product Overview
This high-precision refractive index standard (1.39032 at 20°C) is formulated with stabilized sucrose to ensure long-term accuracy and consistency in optical measurements. The solution is manufactured under strict quality control to meet ISO 17025 standards, offering a certified precision of ±0.00002 for reliable refractometer calibration. The stabilized formulation prevents degradation over time, maintaining its optical properties even with repeated use. Packaged in a sealed 15 ml bottle with tamper-evident cap, it eliminates contamination risks while providing sufficient volume for multiple calibrations. The standard is compatible with Abbe refractometers, digital handheld refractometers, and other optical instruments requiring traceable calibration. Each batch undergoes rigorous testing against NIST-traceable references to guarantee accuracy across different laboratory conditions. The low-temperature coefficient ensures minimal variation in readings when used within the 15-25°C range, making it suitable for diverse environmental settings.
FAQs
1. What is the shelf life of this refractive index standard?
The stabilized sucrose formulation maintains its certified accuracy for 24 months from the date of manufacture when stored unopened at 15-25°C. Once opened, use within 6 months for optimal performance.
2. Can this standard be used with infrared refractometers?
This standard is optimized for visible light refractometers (400-700 nm). For infrared applications, specialized standards with different wavelength calibrations are recommended due to dispersion variations.
3. How does the temperature coefficient affect measurements?
The standard has a temperature coefficient of 0.0001 per °C. For precise work, use the temperature compensation formula provided in the certificate or maintain the sample at exactly 20.0°C during calibration.
4. What alternatives exist for higher refractive index values?
For indices above 1.4000, consider our glycerin-based standards (up to 1.4700) or bromonaphthalene standards (up to 1.6600), which offer similar precision with different chemical compositions.
5. Is recertification available after the expiration date?
We don’t offer recertification for sucrose-based standards due to potential degradation. For continued accuracy, we recommend purchasing a fresh standard before the expiration date indicated on the label.
