Ubbelohde

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Ubbelohde

The Ubbelohde viscometer and other suspended level viscometers are also used to measure transparent liquids.

Unlike the Cannon-Fenske Routine viscometer, suspended level viscometers possess the same viscometer constant at all temperatures.

This property is advantageous when measurements are to be made at a number of different temperatures.

CANNON has improved the design of the Ubbelohde viscometer to make a more rugged instrument called the Cannon-Ubbelohde viscometer.

Other suspended level viscometers in this catalog include the BS/IP/SL, BS/IP/SL(S), and BS/IP/MSL viscometers.

UBBELOHDE VISCOMETERS

Calibrated UBC Series

For measurement of kinematic viscosity of transparent Newtonian liquids by suspended level

principle as described in ASTM D 445 and D 446, and ISO 3104 and 3105.

Similar to Cannon-Ubbelohde but less rugged in design.

Provided with certificate of calibration and instruction sheet.

Minimum sample volume 11 mL. Require liquid bath depth of 241 mm (9.5 inches).
Constants and ranges are as specified in Table 2.
Holder is not supplied. For holder, see 9726-M82.

Uncalibrated UBU Series

Similar to 9721-R50 series, but uncalibrated.

Holder is not supplied. For holder, see see 9726-M82

Ubbelohde Unity Factor

Calibrated UBXC Series

Similar to 9721-R50 series, but with constant within ± 0.2% of values listed in Table 2.

Provided with certificate of calibration and instruction sheet.

Holder is not supplied. For holder, see 9726-M82.

CANNON-UBBELOHDE VISCOMETERS

Calibrated CUC Series

Suspended level viscometer for measurement of kinematic viscosity of transparent Newtonian liquids according to ASTM D 445 and ISO 3104.

Also used for evaluating jet and hydraulic lubricants. Especially suited for use at temperatures above 93°C (200°F) or below –18°C (0°F).

Require no kinetic energy corrections over 0.5 to 100 000 centistokes range.

Viscometer constant is same at all temperatures.

Specifications conform to ASTM D 446 and ISO 3105.

Provided with certificate of calibration and instruction sheet.

Minimum sample volume 11 mL. Require liquid bath depth of 254 mm (10-inches); must be submerged to approximately 220 mm (8.5-inches).
Constants and ranges are as specified in Table 1 .
Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

Uncalibrated CUU Series

Similar to 9721-K50 series, but uncalibrated.

Holder is not supplied. For holders, see 9726-M70, -M73, and -M76 on page 15.

CANNON-UBBELOHDE DILUTION VISCOMETERS

Dilution Type Calibrated CUDC Series

For measurement of intrinsic viscosity of transparent Newtonian liquids according to ASTM D 445 and ISO

3104. Specifications conform to ASTM D 446 and ISO 3105.

Viscometer constant is same at all temperatures.

Provided with certificate of calibration and instruction sheet.

Minimum sample volume of 8 mL can be diluted to 40 mL.
Require liquid bath depth of 305 mm (12 inches).
Constants and ranges are as specified in Table 1.
Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

Dilution Type Uncalibrated CUDU Series

Similar to 9722-M50 series, but uncalibrated.

Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

CANNON-UBBELOHDE

Semi-Micro Calibrated CUSMC Series

For measuring kinematic viscosity of small samples of transparent Newtonian liquids according to ASTM D 445

and ISO 3104. Specifications conform to ASTM D 446 and ISO 3105.

Viscometer constant is same at all temperatures.

Provided with certificate of calibration and instruction sheet.

Minimum sample volume approximately 1.0 mL. Sizes 400 through 600 may require larger sample volume. Initial sample can be diluted to as much as 20 mL for intrinsic viscosity determinations. Require liquid bath depth of 240 mm (9.5 inches).
Size 25 has approximate constant 0.002 cSt/s and a range of 0.4 to 2 cSt. Constants and ranges for all other sizes are as given in Table 1.
Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

Semi-Micro Uncalibrated CUSMU Series

Similar to 9722-H50 series, but uncalibrated.

Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

Dilution Viscometers

Estimates of the molecular size and shape of large polymer molecules can be obtained from kinematic viscosity measurements of dilute solutions of the polymers.

The Cannon-Ubbelohde Dilution viscometer has an extra-large reservoir which allows polymer solutions to be diluted several times.

Dilute polymer solutions frequently appear to exhibit changes in kinematic viscosity when the shear rate is changed.

By using the Cannon-Ubbelohde Four-Bulb Shear Dilution viscometer, measurements can be made at four different shear rates.

UBBELOHDE FOUR-BULB SHEAR DILUTION VISCOMETERS

Five-fold dilution type

Calibrated CUSDC-11 Series

For measurement of intrinsic viscosities extrapolated to zero shear rate. Provide five-fold range of shear rates. Design gives extra mechanical strength.

Negligible kinetic energy correction.

Provided with certificate of calibration and instruction sheet.

Minimum sample volume 20 mL. Require liquid bath depth of 280 mm.

Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

Uncalibrated CUSDU-11 Series

Similar to 9723-M50 series, but uncalibrated.

Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

Ten-fold dilution type

Calibrated CUSDC-17 Series

Similar to 9723-M50 series, but provide ten fold range of shear rates.

Provided with certificate of calibration and instruction sheet.

Minimum sample volume 20 mL. Require liquid bath depth of 430 mm. The CT-518 bath is recommended.
Holder is not supplied. For holders, see 9726-M70, -M73, and -M76.

Uncalibrated CUSDU-17 Series

Similar to 9723-R50 series, but uncalibrated.