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Brookfield Viscometer
A Brookfield Viscometer is a rotational viscometer designed to measure the internal friction (viscosity) of fluids, ranging from thin liquids to thick pastes. It is widely recognized as an industry standard for quality control, research, and product development across multiple sectors.
Key Details:
Category: Viscosity Measurement / Laboratory Instrument
Chemical Formula: N/A (Instrument / Mechanical Device)
Materials of Construction: Typically painted aluminum and ABS
plastic for the main body; spindles made from 302 or 316 stainless steel,
with optional Teflon coatings.
Description:
- Operating Principle: A motor rotates a spindle immersed in the fluid sample at a controlled speed. The fluid exerts resistance (drag) on the spindle, which is measured as torque and converted to viscosity.
- Key Components: Motor, spindle, calibrated spring mechanism, and display/output system for data recording.
- Types: Analog dial viscometers, digital models (e.g., DV-E, DV2T), and programmable rheometers (e.g., DVNext).
- Measurement Units: Centipoise (cP) or millipascal-seconds (mPa·s).
Common Uses / Applications:
- Quality Control: Ensures batch-to-batch consistency in production and determines product stability.
- Product Development: Measures viscosity under varying conditions to optimize formulations.
- Industry Applications: Pharmaceuticals (syrups, creams), cosmetics (lotions, gels), food (sauces, chocolate), paints/coatings, oils, and adhesives.
- Specialized Measurements: Uses accessories like the Helipath stand for semi-solid or non-flowing samples, and Small Sample Adapters for limited or expensive samples.
- Fluid Behavior Analysis: Determines characteristics of Non-Newtonian, shear-thinning, or thixotropic fluids.
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