High Temperature (HTHS) Viscosity Standards
ASTM D4683, D4741, D5481, D6616
CANNON high temperature viscosity standards are produced in accordance with ASTM D5481, Apparent Viscosity at High-Temperature and High-Shear Rate by Multicell Capillary Viscometer and ASTM D4741, Viscosity at High Temperature and High Shear Rate by Tapered Plug Viscometer. ASTM D6616 TBS test at 100 °C applies to certain standards as well. Lot specific viscosity data in mPa·s (cP) is provided with each standard.

QUALITY CERTIFICATIONS
ISO 9001:2015 REGISTRATION/CERTIFICATION
CANNON's testing laboratory is ISO 9001:2015 certified through Underwriters Laboratories.
We are ISO 9001 registered for the following products and services:

We are ISO 9001 registered for the following products and services:

• 3823 (US): Industrial Instruments for Measurement, Display, and Control of Process Variable; and Related Products.
• The manufacture and certification of viscosity standards and the viscosity certification of customer-supplied materials.
• The provision of calibration services for viscometer and kinematic viscosity thermometers.

Click here to view a copy of our ISO 9001 certificate.

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CANNON Instrument
CANNON Instrument Company has earned international acclaim for the quality of its viscosity-related products and services since its founding in 1938 by scientist, inventor, and educator Dr. Michael R. Cannon. The company's longstanding emphasis on production of premier-quality test equipment has kept CANNON at the cutting-edge of research and development.

Specialties:

• Automated Viscometers & Rheometers
• Viscosity & Flash Point Standards
• Constant Temperature Baths
• Manual Glass Viscometers
• Physical Property Testers
• Service & Support
• Densitometers
• Digital Thermometers