CRMU-FRKR is a certified reference material (CRM) manufactured by Paragon Scientific, designed specifically for calibrating and verifying the accuracy of instruments used to measure the freezing point of jet aviation fuel. This CRM has a nominal freezing point of -53.7°C and is supplied in a 250 mL volume. It serves as a crucial tool for laboratories and industries that require precise determination of jet fuel freezing points, ensuring compliance with quality control standards and regulatory requirements. Paragon Scientific is renowned for producing high-quality CRMs, and the CRMU-FRKR is accompanied by a certificate of analysis, providing traceability and confidence in the accuracy of measurements.