A refractometer is a device that measures how light bends—or refracts—when it passes through a substance. This refraction correlates with the concentration of solutes in liquids. Whether it's sugar in juice (Brix), saline in water, or chemicals in coolants—refractometers tell you how much "stuff" is in your liquid.
What Are Calibration Standards?
Calibration standards are reference solutions or materials with known refractive indices. By comparing your refractometer’s reading to the standard’s known value, you can adjust it to ensure accurate measurements.
Importance of Accurate Calibration
Ensuring Measurement Precision
Precise measurements ensure consistency, whether you're brewing craft beer or manufacturing pharmaceuticals.
Compliance With Industry Regulations
Many industries—like pharma, food, and biotech—require documented, validated calibration for audits and compliance.
Preventing Costly Errors in Production
Wrong sugar levels in juice? Off-concentration in eye drops? These aren’t just mistakes—they’re business and safety risks.
Certified Reference Materials for Refractometers & Polarimeters
Ensure the accuracy of your lab instrumentation with premium Certified Reference Materials (CRMs) by Bellingham + Stanley, a trusted name in analytical calibration. Whether you're working in food production, pharmaceuticals, petrochemicals, or beverage industries, our extensive CRM solutions are designed to support reliable performance and compliance with international standards.
Why Use CRMs?
Regular instrument verification is essential—not just for quality control but also for maintaining optimal operational efficiency. All of our CRMs are manufactured to stringent standards and certified under ISO/IEC 17025:2017 by UKAS, the United Kingdom's national accreditation body and a signatory of the ILAC Mutual Recognition Arrangement.
Our CRM Product Range Includes:
✅ Water-Based Low Brix Solutions
Ideal for calibrating instruments measuring lower Brix values.
✅ High-Value Oil-Based Standards
Designed for industries requiring verification across a wide refractive index spectrum.
✅ Sucrose Calibration Solutions
Convenient and ready-to-use for instruments with automatic temperature compensation (ATC).
✅ Quartz Control Plates for Polarimetry
Engineered for precise angular and sugar scale calibration, traceable to PTB standards.
AG Calibration Fluids (Water-Based)
Perfect for applications requiring low-end °Brix or refractive index validation. Available in cost-effective multipacks with long shelf life (12 months minimum).
Refractive Index & °Brix Examples:
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AG2.5 → RI: 1.33659 | °Brix: 2.50
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AG15 → RI: 1.35568 | °Brix: 15.00
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AG40 → RI: 1.39986 | °Brix: 40.00
Certified by UKAS | ±0.000037 RI Uncertainty | ICUMSA/NIST Traceable
Calibration Oils
Used primarily for instruments operating across wide refractive ranges—such as in the edible oil sector. Due to their temperature sensitivity, we recommend precise temperature control during calibration.
Examples:
Certified by UKAS | Up to ±0.000103 RI Uncertainty | ICUMSA/NIST Traceable
Industry-Specific Multi-Packs
Mixed value multipacks are ideal for service engineers and QA teams. These ready-to-use kits simplify instrument verification and are available for:
Each pack contains 5 x 5ml bottles, disposable pipettes, and UKAS calibration certificates.
Sucrose Calibration Solutions
Our sucrose-based standards are convenient, easy to use, and optimized for refractometers with ATC. Supplied in 15ml dropper bottles, these are perfect for reducing contamination risks and increasing calibration accuracy.
Shelf Life: 6 Weeks | Storage: Refrigerate (5°C) | Certified by UKAS
Available Brix values range from 0% to 60%, with corresponding refractive index values provided.
Aqueous Urea Calibration Solutions for DEF Testing
For ISO 22241 compliance in Diesel Exhaust Fluid (DEF) applications, we offer a reliable CRM with a refractive index equivalent to 32.5% urea.
Certified by UKAS | ±0.000034 RI Uncertainty
Quartz Control Plates (QCP) for Polarimeters
Manufactured with precision for verifying polarimeter performance. Available in single values or sets, each plate is optionally certified with traceability to PTB.
Available Angular & ISS Values:
UKAS Certified | Best Uncertainty: ±0.017°Z | Re-certification recommended