www.davidson.com.au -Cannon Viscometers & Viscosity Standards

Most viscosity standards supplied by CANNON are hydrocarbon oils. The lower viscosity standards consist of mineral oil base stocks; the higher viscosity standards are polybutenes. Several of the intermediate viscosity “N” standards are poly alpha olefins. Nominal or approximate values are listed in the following tables. The first table provides kinematic viscosity values in mm2/sec (centistokes). The second table provides dynamic viscosity in millipascal-seconds (centipoise).

Values for viscosity, kinematic viscosity, and density at the temperatures listed below are printed on the bottle label. Viscosity values at other temperatures in the range of 20°C to 100°C (68°F to 212°F) can be supplied for these standards at an additional charge. Unless otherwise noted, viscosity standards are sold in 500 ml (1 pint) bottles. Bulk quantities are available on special order. We invite your inquiries.

Viscosities for all standards sold by Cannon are based on the National Institute of Standards and Technology (NIST) value of 1.0016 mPa•s (cP) for water at 20°C (68°F). All CANNON viscosity standards meet the precision specifications of ASTM D 445/446 and ISO 3104/3105, and are traceable to the NIST. CANNON viscosity standards are manufactured and/or certified in CANNON's ISO 9001:2000 registered and A2LA-accredited laboratory. A2LA has accredited CANNON for technical competence in the field of calibration (certificate number 1262.01). The accreditation includes the determination of kinematic and dynamic viscosity (including that of viscosity standards and customer samples) in accordance with ISO/IEC 17025-1999. All calibrations are based on the master viscometer procedures detailed in ASTM D 2162.

Cannon Now Offers More Viscosity Standard Choices
Cannon Instrument Company has announced major additions to its line of viscosity standards. The “N” and “S” series general purpose standards and the “CL” series low-temperature standards
from Cannon will be augmented by the introduction of new materials at intermediate viscosities. The new “N” standards will be available in the spring of 2005. Introduction of the new CL standards will follow later in the year, and will be prefaced by a nomenclature change that is effective immediately.

CL Standards Nomenclature Change
To accommodate the expanded CL standard line (and additional standards that may be produced in the future) Cannon has renamed existing CL standards by adding the digit “0” to the end of
each CL standard name. For example, CL14 is now CL140; CL74 is now CL740. The name change is effective immediately; part numbers for all standards in the current CL series will remain the
same.

New “N” Standards
Users of the general purpose viscosity standards with temperatures between 20°C and 100°C will find that their choices have grown from 19 to 34, with 15 new “N” standards. Preliminary data
on the “N” standards has been posted at the cannon website: www.cannoninstrument.com . Additional details will be posted as the information becomes available.

A Note On Viscosity Index
Cannon Instrument Company produces standards from various base stocks, including mineral oils, poly-alpha-olefins and polybutenes. Each of the various types of base stocks exhibits a
distinctive Viscosity Index (VI) curve (change in viscosity per unit temperature).

The new “N” standards are primarily poly-alpha-olefins and like the other general purpose standards will be named by the nominal viscosity of the standard material at 40°C or at 100°F.
For example, the nominal kinematic viscosity for the new N75 standard will be 75 mm2/s at 40°C.

When complete viscosity information for the expanded standard line is available, you will note (for example) that the N75 (poly-alpha-olefin) will be more viscous at 100°C and less viscous
at 40°C than the N100 (mineral oil). This is due to the unique viscometric properties of each base stock.