In addition to the low sample volume consumption, VROC® initium viscometer features sample retrieval, allowing to reuse a small quantity of sample for repeated tests. This functionality enables the characterization of samples over a wide range of shear rates with just about a tear drop! For this application brief, we tested a single 18 µL sample of Bovine Serum Albumin (BSA) 302 mg/mL in water at 20 different shear rates!
The test was conducted as follows:
Overall, 18 µL of BSA was consumed to test at 20 different shear rates, from 1066 to 2840 1/s. The BSA sample exhibits Newtonian behavior across the range tested (See Figure), with an average viscosity of 6.078cP at 25 oC, and a relative standard deviation of 0.51%!
Want to read more about automating your viscosity measurements? Visit our application library! ↓