Laboratory testing relies heavily on precision instruments and equipment, with their accuracy being essential to ensuring the validity of experimental data. Over time, factors such as operating practices, environmental conditions, and test-related contamination can compromise an instrument’s ability to maintain reliable verification or calibration status. To safeguard measurement integrity, laboratories should conduct intermediate verifications at regular intervals, ensuring continued accuracy and dependable performance.

In intermediate verification, reference materials play a crucial role. We provide you with high-quality reference materials needed by various laboratories to meet your intermediate verification needs:

CANNON Viscosity Reference Oils

A wide range of models and specifications is available, suitable for use with capillary glass viscometers, fully automatic viscometers, cold-cranking simulators (CCS) for low-temperature apparent viscosity of engine oils, mini-rotary viscometers (MRV) for borderline pumping temperature, high-temperature high-shear (HTHS) viscometers for lubricating oil dynamic viscosity, and numerous other testing applications.

CANNON Viscosity Reference Oils are certified in CANNON laboratories accredited to ISO 9001 and A2LA standards. CANNON Instrument Company serves as the NIST-traceable ASTM viscosity reference fluid calibration and production facility, the ASTM International CIC (Cannon Instrument Company) viscosity proficiency testing provider laboratory, and the official custodian of the U.S. national viscosity standards.

ARO Standard Reference Materials:

We supply a comprehensive range of standard reference materials, including flash point reference oils for multiple methods (Abel flash point, open-cup flash point, closed-cup [A/B] flash point), automatic smoke point standards, freezing point standards, pour point standards, cloud point standards, cold filter plugging point standards, distillation standards, acid number standards, base number standards, and sulfur content (heavy mineral oil) standards, among others.

ARO Standard Reference Materials are produced by UK-based ARO Scientific Ltd, a company with over 40 years of expertise in reference material manufacturing. As an independent producer certified to ISO 17034, ARO Scientific operates a testing laboratory accredited to ISO/IEC 17025. The company offers high-quality certified reference materials, reference substances, standards, and consumables for calibration, validation, and verification of measurement equipment and methods, supporting quality control processes aligned with international testing standards including ASTM, IP, and ISO.

Half the year has passed—come quickly to perform intermediate verification and ensure the reliability of your instruments and equipment!