Manual Glass Viscometers
We offer a variety of glass capillary viscometers because no single viscometer is ideally suited to every application. Use of high quality instruments ensures test reliability and accuracy

Transparent
For transparent/translucent liquids
Suspended Level
For transparent/translucent liquids. Ideal for testing at multiple temperatures because they have the same viscometer constant at all temperatures.
Dilution
For dilution of polymer solutions to provide an estimate of the molecular size and shape.
Reverse Flow
For transparent and opaque liquids. Must be cleaned, dried and refilled between repeat determinations.
Vacuum
A special type of reverse-flow viscometer for highly viscous samples (transparent or opaque). Accurately controlled vacuum is required to pull the liquid through the viscometer.
Asphalt Institute Vacuum Viscometer (Reversed Flow)
ASTM D2171
The Asphalt Institute Vacuum Viscometer measures the viscosity of highly viscous materials. Minimum sample volume is 3 mL. Minimum bath depth is 180 mm (7.1 in). Viscometers are provided with a certificate of calibration and instruction sheet
BS/IP/MSL Miniature Suspended Level Viscometer
ASTM D445 and ISO 3104
The BS/IP/MSL Miniature Suspended Level Viscometer measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 4 mL. Minimum bath depth is 305 mm (12 in). Viscometers are provided with a certificate of calibration and instruction sheet.
BS/IP/RF U-Tube Reversed Flow Viscometer
ASTM D445 and ISO 3104
The BS/IP/RF U-Tube Reversed Flow Viscometer measures kinematic viscosity of opaque Newtonian liquids. Minimum sample volume is 7 mL. Minimum bath depth is 280 mm (11 in). Viscometers are provided with a certificate of calibration and instruction sheet.
BS/IP/SL Suspended Level Viscometer
ASTM D445 and ISO 3104
The BS/IP/SL Suspended Level Viscometer measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 11 mL. Minimum bath depth is 250 mm (10 in). Viscometers are provided with a certificate of calibration and instruction sheet.
BS/IP/SL(S) Suspended Level Viscometer
ASTM D445 and ISO 3104
The BS/IP/SL(S) Suspended Level Short Viscometer measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 10 mL. Minimum bath depth is 230 mm (9 in). Viscometers are provided with a certificate of calibration and instruction sheet.
BS/U/M Miniature Viscometer (Transparent)
ASTM D445 and ISO 3104
The BS/U/M Miniature U-Tube Viscometer measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 2 mL. Minimum bath depth is 230 mm (9 in). Viscometers are provided with a certificate of calibration and instruction sheet.
BS/U-Tube Viscometer (Transparent)
ASTM D445 and ISO 3104
The BS/U-Tube Viscometer measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 7 mL (size A-C); 12 mL (size D-F); 23 mL (size G-H). Minimum bath depth is 280 mm (11 in). Viscometers are provided with a certificate of calibration and instruction sheet.
CANNON-Fenske Opaque Viscometer (Reversed Flow)
ASTM D445, ISO 3104 and ASTM D2170
The Cannon-Fenske Opaque Viscometer measures kinematic viscosity of transparent and opaque Newtonian liquids. Minimum sample volume is 12 mL. Minimum bath depth is 230 mm (9 in). Special constant viscometers are available at additional cost. Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
CANNON-Fenske Routine Viscometer
ASTM D445 and ISO 3104
The Cannon-Fenske Routine Viscometer measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 7 mL. Minimum bath depth is 203 mm (8 in). Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
CANNON-Manning Semi-Micro Extra Low Charge Viscometer
ASTM D445 and ISO 3104
The Cannon-Manning Semi-Micro Extra Low Charge Viscometer measures kinematic viscosity of very small samples of transparent Newtonian liquids. Minimum sample volume is ~0.5 mL (sizes 200 through 600 may require additional sample). Minimum bath depth is 230 mm (9 in). Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
CANNON-Manning Semi-Micro Viscometer
ASTM D445 and ISO 3104
The Cannon-Manning Semi-Micro Viscometer measures kinematic viscosity of small samples of transparent Newtonian liquids. Minimum sample volume is ~1 mL (sizes 400 through 600 may require additional sample). Minimum bath depth is 200 mm (8 in). Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
CANNON-Ubbelohde Dilution Viscometer
ASTM D445 and ISO 3104
The Cannon-Ubbelohde Dilution Viscometer measures intrinsic viscosity of transparent Newtonian liquids. Minimum sample volume is 8 mL (can be diluted to 40 mL). Minimum bath depth is 305 mm (12 in). The CANNON CT-518 bath is recommended. (CT-500 and CT-600 baths are not deep enough.) Viscometer constant is the same at all temperatures. Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
CANNON-Ubbelohde Four-Bulb Shear Dilution Viscometer
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The Cannon Four-Bulb Shear Dilution Viscometer measures intrinsic viscosities extrapolated to zero shear rate with negligible kinetic energy correction. Minimum sample volume is 20 mL. Minimum bath depth is 280 mm (11 in). Minimum bath depth for viscometers with the 10x range of shear rates is 430 mm (17 in). Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
CANNON-Ubbelohde Viscometer
ASTM D445 and ISO 3104
The Cannon-Ubbelohde Viscometer, with a more rugged design than standard Ubbelohde viscometers, measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 11 mL. Minimum bath depth is 254 mm (10 in) but it must be submerged to 220 mm (8.5 in). Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
CANNON-Ubbelohde Semi-Micro Viscometer
ASTM D445 and ISO 3104
The Cannon-Ubbelohde Semi-Micro Viscometer measures kinematic viscosity of small samples of transparent Newtonian liquids. Minimum sample volume is ~1 mL (sizes 400 through 600 may require additional sample). Initial sample can be diluted as much as 20 mL for intrinsic viscosity determinations. Minimum bath depth is 240 mm (9.5 in). Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
Ubbelohde Viscometer
ASTM D445 and ISO 3104
The Ubbelohde Viscometer measures kinematic viscosity of transparent Newtonian liquids. Minimum sample volume is 11 mL. Minimum bath depth is 241 mm (9.5 in). Unity factor series has a constant within +/- 0.2% of the values listed. Both calibrated and uncalibrated viscometers are available. Calibrated viscometers include a certificate of calibration and instruction sheet.
Zeitfuchs Cross-Arm Viscometer (Reversed Flow)
ASTM D445 and ISO 3104
The Zeitfuchs Cross-Arm Viscometer measures kinematic viscosity of transparent and opague Newtonian liquids. Filling and cleaning does not require removal from the constant temperature bath. Minimum sample volume is 1 to 3 mL. Minimum bath depth is 230 mm (9 in). Unity factor series has a constant within ± 0.2% of the values listed. Viscometers are provided with a certificate of calibration and instruction sheet.
Zeitfuchs Transparent Viscometer
ASTM D445 and ISO 3104
The Zeitfuchs Transparent Viscometer measures kinematic viscosity of transparent Newtonian liquids. Filling, measurement and cleaning do not require removal from the constant temperature bath. Minimum sample volume is 15 mL. Minimum bath depth is 292 mm (11.5 in). Both calibrated and uncalibrated viscometers are available. Calibrated viscometers also include a certificate of calibration and instruction sheet.