Brookfield Engineering Laboratories Inc.

The Höppler principle is used to measure the viscosity of Newtonian liquid by measuring the time required for a ball to fall under gravity through a sample-filled tube that is inclined at an angle. The average time of three tests is taken; the result is converted into a viscosity value using a simple formula.

Two models are available:
KF30 has a fixed angle of 80° and complies with DIN 53015
KF40 can be angled at 50°, 60°, 70° and 80°.
Features And Benefits

Pivot bearing allows for quick and easy tube rotation - ideal for repeat tests
Connection to circulating bath for temperature control of sample
Set of six balls to test a wide variety of samples
Complete with temperature probe
Accuracy 0.5% to 2.0% depending on ball being used

With it's conventional oilfield rotor, bob and torsion spring, maintaining rheology history and reproducibility between instruments is easy. The BF35 maintains a constant shear rate under varying input power and drilling fluid conditions while providing drilling fluid engineers with an accurate and versatile tool.

The BF35 operates on a different measurement technique than traditional standard Brookfield Viscometers. The sample is placed in the cup and the spindle/chamber combination is then immersed into the sample. When the motor is turned on, the chamber rotates while the spindle remains stationary. When the dial reading becomes stable, the torque reading is recorded and manually converted into a viscosity value in centipoise.
Features & Benefits

Easy speed changes
Conventional oilfield rotor, bob and torsion spring
Adjustable table height to accommodate a variety of beaker/container sizes
Shear stress values displayed on easy-to-read lighted dial
Maintains a constant shear rate under varying input power and drilling fluids
Measures viscosity of drilling muds and fracturing fluids according to established methods from the American Petroleum Institute and the ASTM

With Multi-Speed Electronic Drive

The original Brookfield Dial Reading Viscometer is the lab standard used around the world.

Now it's improved with a multi-speed electronic drive and ergonomically designed speed control knob. Quickly select any one of 10 pre-set speeds (8 speeds on LVT models). This new direct-drive design means extremely quiet operation and greater versatility. The new Universal Power Supply facilitates the use of worldwide power sources.
Features & Benefits

Continuous torque sensing capability
Torque measurement accuracy: 1% of full scale range
Repeatability: 0.2% of full scale range
Easy speed adjustment and on/off control
Compatible with all Brookfield accessories
NIST traceable viscosity standards available
Electronic drive means quiet, reliable operation
Universal power supply worldwide compatibility
2-Year limited warranty
Traditional Brookfield quality
Explosion-proof model is available. Call for details.