Rheocalc v3.2 software provides automated instrument control and data acquisition. The test temperature of 40☌ was maintained by connecting the Small Sample Adapter water jacket to a Brookfield TC-550AP-230 Programmable Refrigerated Bath. The SC4-13RPY sample chamber has an integral temperature probe that connects with its cable to the rheometer, to provide temperature readout. We used a Brookfield HADV-III Ultra Rheometer with SC4-27 hanging link spindle for our example. The Small Sample Adapter may be used with various Brookfield Viscometers or Rheometers. The US National Confectioners Association and Chocolate, NCA specify a chocolate test procedure using Brookfield equipment such as those listed above. Accessories: Small Sample Adapter, TC-550AP-230 Programmable Temperature Bath.Spindle: SC4-27 with SC4-13RPY Sample Chamber.Viscometer/Rheometer Spring Torque Range: HA.We have a wide selection of measuring geometries and accessories to accommodate the most demanding of samples, ranging from simple cone/plate, plate/plate and concentric cylinder systems to sand-blasted and crosshatched surfaces for slip elimination and low-inertia acrylic geometries for optimum oscillatory performance.Chocolate is used in making a large variety of desserts and treats, including sweets, icings, pastry fillings and desserts, just to name a few. Normal stress and 1 st Normal stress coefficient measurement.Determination of complex, elastic (storage) and viscous (loss) moduli, complex viscosity, phase angle (δ) and loss tangent (tanδ).Viscoelasticity profiling through oscillatory (dynamic) and creep testing modes.Rate of thixotropic breakdown on shearing and recovery following the cessation of shearing.Yield stress and yield/critical strain.Viscosity as a function of shear stress, shear rate and temperature.These rheological methods will deliver the following material properties: Temperature cycling can also be performed.Įxamples of some of these methods can be found here. Oscillation temperature ramps (continuous) or sweeps (stepped).
Oscillation stress or strain amplitude sweeps.Three step methods can be performed in shear, oscillation or mixed formats. Thixotropy testing: Either up-down ramps or three-step methods (conditioning–breakdown-recovery).Shear stress and shear rate sweeps in either continuous, stepped-ramp or steady-state (equilibrium) mode.The following rheological testing procedures are available: These versatile instruments can test samples ranging from very thin to very thick liquids and ultra-fragile colloidal structures to highly-rigid solids. Our two advanced research rheometers (AR2000EX and AR1000N) provide high quality flow, creep and oscillation testing capabilities in controlled stress and controlled strain/rate modes of operation. Rheology Analysis and Viscoelasticity Profiling Rheology Analysis & Viscoelasticity, Viscosity Testing & Research
0 kommentar(er)
