Rheosense has introduced an analytical system for taking viscosity measurements of inks, protein and biological solutions.
The m-VROC 2.5 is a complete measurement system equipped with automatic chip recognition and closed-loop temperature control.
For more control of the test environment, an optional air purge unit and a Peltier chiller can be added to the system.
The mechanical and electronic interfaces have been enhanced to make it easier to capture, view and record viscosity measurements.
This portable system can be transported from a laboratory to a production line for critical measurements.
The m-VROC provides accuracy with small sample volumes such as 50 microlitre.
With its wide measurement range (0.1 to 100k cP viscosity) and high shear rates, the m-VROC is capable of analysing virtually any liquid viscosity value, Newtonian and non-Newtonian.
Thermal characteristics are an important aspect of viscosity measurements - a change in temperature can affect viscosity, the accuracy and reliability of measurement results.
An optional circulating water bath, a Peltier chiller, can be added for greater temperature control.
With this addition, the closed-loop temperature control system is fast and stable, operating at a range of 4C to 69C with an accuracy of +/-0.05C.
The core of the system is VROC, the MEMS chip developed by Rheosense.
To provide accurate measurement for a variety of liquid products, Rheosense supports that need with a selection of VROC chips.
To help ensure the system is set up for optimum measurement, m-VROC 2.5 is equipped with automatic chip recognition.
A VROC chip measures the viscosity of a liquid flowing through a fully contained microfluidic cell.
This full containment eliminates air interface, a common problem with conventional cone-and-plate or plate-and-plate rheometers for protein solutions, surface active materials and volatile liquids.
For more control of the test environment, an optional purge air supply can be connected to the system, which prevents condensation inside the chamber.
This feature can be especially important when operating at low temperatures.
