When using the Brookfield Viscometer method, you typically measure viscosity in centipoise (cp). If you run Sample A at -35 °C and get a viscosity reading of X cp, it’s important to note that this reading reflects the fluid's resistance to flow at that specific temperature.
Now, regarding your assumption about running a Controlled Shear Rate (CSR) test (often referred to as CCS) at the same temperature: while both methods can measure viscosity, the results might not directly translate one-to-one. The equivalence you mentioned—1 cp being equal to 1 mPa·s—holds true under certain conditions, specifically when dealing with low-shear Newtonian fluids. However, if your sample exhibits non-Newtonian behavior (which many do), the viscosity measured under shear conditions may differ significantly due to factors like shear rate and sample structure.
In short, if Sample A is non-Newtonian, you might not receive back X mPa·s when running CCS at -35 °C. It's always best to consider the specific characteristics of your sample and possibly run a few tests to confirm any assumptions.
Miss Lo
Parramatta Painters