K447-BX Dynamic Viscosity

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KOEHLER _ 447-BX Dynamic Viscosity by Bold Series Rotational Viscometer


Test Method
Determines the dynamic viscosity of a substance by the rotation of a specified spindle within the sample at the speed giving the maximum torque reading on the viscometer. The resulting torque reading is used to calculate the viscosity of the substance.

Bold Series Rotational Viscometer

• Bold series viscometers allow fast and accurate viscosity readings.
• They are low budget and easy to use.
• Data Displayed
Selected speed: r.p.m.
Selected spindle: SP
Viscosity Reading: cP (mPa·s)
Percentage of full scale: %
• Relative and absolute viscosity
• Unit converter SI to CGS
• AUTO-TEST with sound and visual malfunction alarm
• AUTO-RANGE function
• User-enabled calibration
• 10 language options
• AISI 316 stainless steel spindles

Click on the image to view a larger photo of the instrument.


Precision: ±1% of full scale
Using low viscosity adapter: 0.01
For lower than 10,000 viscosity cP: 0.1
For viscosity equal to or above 10,000 cP: 1
Repeatability: 0.2%
Electrical Requirements: 100-240V, 50/60Hz
Measuring Range:
Bold Series L: 20-2,000,000 cP
Bold Series R: 100-13,000,000 cP
Bold Series H: 200-106,000,000 cP
Speed: 0.3-100 rpm
Number of Speeds: 18

Included Accessories
Standard Spindles (4 spindles for L model, 6 spindles for R and H models)
Viscometer Stand
Spindle Protector

Ordering Information
Product Description
Bold Series L Rotational Viscometer

Bold Series R Rotational Viscometer

Bold Series H Rotational Viscometer