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VROC Initium Consumable Replacement Tips


My name is Ecko Chen, and I am the Mechanical Engineer here at RheoSense. My coworker Brandon has introduced a consumable list for the VROC® Initium maintenance in the previous post. I am going to expand a little on one of the most common consumable replacements --- The septa.

In VROC Technology, Biotechnology, Rheometer, General Information, Viscometer, Small Sample Viscometer, RheoSense, Inc., VROC initium, FYI, Guidelines, technical information

Tips On Maintaining Your VROC Initium:

My name is Brandon Bell and I am the Process Engineer here at RheoSense. I am responsible for the production of the VROC® Initium product line and I wanted to take a few minutes to provide you a few tips and tricks that I have picked up to help you get the most out of your instrument.

In VROC Technology, Biotechnology, Rheometer, General Information, Viscometer, Small Sample Viscometer, RheoSense, Inc., RheoSense Clients, Automatic Viscometer, VROC initium, High throughput Viscometer, FYI, Guidelines, technical information

What Can System Suitability Do For You?

We frequently get the question, "how do I know that my equipment is working, or that these tests are accurate?" The best way to determine this and be sure of your results is to run a system suitability test.

In Viscosity Measurements, VROC Technology, Rheometer, General Information, Viscometer, Small Sample Viscometer, RheoSense, Inc., Standards, FYI, technical information

Back To Basics

We are all familiar with maintaining our lab instruments, but how often do we perform maintenance on our lab methods or SOPs?

In microVISC, Viscosity Measurements, Applications, Rheometer, General Information, Viscometer, RheoSense, Inc., Standards, viscosity, Fun with Viscosity, FYI

Latest Release & Upcoming Events

In the upcoming weeks, we are proud to announce the release of our latest application note regarding concentration dependence in protein viscosity. In this app note, Dr. Stacey Elliott gathered viscosity data for Bovine Gamma Globulin (BgG) formulations over the full concentration range, including therapeutic levels ≥ 100 mg/mL, using the VROC®Initium. The solution buffer included sucrose which is a common additive to enhance stabilization during freeze-drying and storage. Relative viscosity versus concentration curves were fit with the Ross-Minton equation which is a frequently used analysis tool for protein formulations.

To view application note, click below!

DOWNLOAD APPLICATION NOTE

In Viscosity Measurements, VROC Technology, Rheometer, General Information, Proteins, Viscometer, Small Sample Viscometer, RheoSense News, Announcement, viscosity, Fun with Viscosity, Protein Solutions, bovine gamma globulin, shear rate sweep

Different Ways to Measure Viscosity

Measuring viscosity dates back to as early as the 19th century. French physicist Jean Poiseuille discovered the concept of measuring viscosity by formulating the "mathematical expression for the flow rate for the laminar flow of fluids in circular tubes." Later on, this formulation was discovered by a German hydraulic engineer Gotthilf Hagen, which came to be known as the Hagen-Poiseuille equation (Britannica). Early measurements of viscosity focused primarily on the flow of blood. Measurements were conducted using the hemodynamometer that incorporated narrow tubes & glass capillaries in effort to measure the pressures in the arteries of horses and dogs (Sutera). 

In Viscosity Measurements, VROC Technology, Biotechnology, Rheometer, m-VROC, General Information, Viscometer, Small Sample Viscometer, viscosity, Automatic Viscometer, High throughput Viscometer, FYI

Cambridge Workshop: VROC® initium ― Automatic, High Throughput Viscometer

RheoSense is proud to present the upcoming workshop where VROC® initium the first truly automated, high throughput viscometer will be unveiled. 


The workshop will take place at the Hyatt Regency in Cambridge, Massachusetts. We will include a demonstration of the instrument, along with a presentation and Q&A session on how automated shear rate/temperature sweeps can help characterize your samples.

RSVP for Event

In Rheometer, Viscometer, RheoSense News, Conference/Event, VROC initium

Viscosity vs. Concentration: L-Arginine Dilute Solutions in Water & PBS

 The exact mechanism by which Arginine molecules affect protein molecules in solution is unclear. Nonetheless, its benefits increasing solubility and controlling viscosity have spread out its application in biopharma formulations, specially for high concentration antibody solutions. 

In our application note, we examine the effect of concentration on the viscosity of dilute solutions of L-Arginine in water and PBS. Additionally, we study the Intrinsic Viscosity of this solutions to better understand molecular size and solubility in dilution. 

Download L-Arginine  Application Note

In Viscosity Measurements, Applications, Biotechnology, Rheometer, m-VROC, Proteins, Viscometer, RheoSense, Inc., Automatic Viscometer, VROC initium, High throughput Viscometer

Workshop: VROC® initium ― Automatic, High Throughput Viscometer Unveil

RheoSense is proud to present the upcoming workshop where VROC® initium the first truly automated, high throughput viscometer will be unveiled. 

VROC initium Workshop - New Jersey April 5, 2016 at 9:00 am

The workshop will take place at the Kenilworth Inn in New Jersey. We will include a demonstration of the instrument, along with a presentation and Q&A session on how automated shear rate/temperature sweeps can help characterize your samples.

RSVP for Event

In Rheometer, Viscometer, RheoSense News, Conference/Event, VROC initium

Application Corner - Conductive Inks


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Viscosity of conductive inks with m-VROC® and microVISC™:


Viscosity of conductive inks, paints and coatings is key to establish manufacturing processes for printed electronics and display systems. The complexity of printing and coating technologies has motivated a rapid growth of the conductive inks industry. To meet the market demands, efficient, highly accurate and fast characterization methods are required.
 
Conventional viscometers are often unable to fully characterize complex fluids (i.e. they are not able to measure viscosity as a function of shear rate or extensional properties). On the other hand, rheometers are limited to relatively low (<10,000 1/s) deformation rates. Our microfluidic-based VROC® (Viscometer/Rheometer On a Chip) technology overcomes these limitations.
 
RheoSense viscometers are able to fully characterize the flow curves (viscosity vs shear rate) of complex fluids for shear rates ranging from 0.5 to 1,400,000 1/s. Additionally, we offer measurements of extensional viscosity and temperature control from 4°C to 105°C. Accurate measurements of shear and extensional viscosity at the deformation rates and temperatures relevant for the fabrication processes are essential to understand the subtleties of the different printing and coating technologies.

VROC® powered instruments, provide a solution to the challenges of conventional technologies. The high accuracy and repeatability over a wide range of deformation rates make our systems Simply Precise™ at a fraction of the sample volume and testing time!
 
 
 
 
Target Keywords
Inks Viscosity
Non-Newtonian Inks
Shear Thinning Inks
Accurate Low Viscosity Measurements
 
 
 
 
Industries:
Inkjet Inks
Ceramic Inks
Water Based Inks
Biopolymer and Protein Inkjet
 
 
 
In microVISC, Viscosity Measurements, VROC Technology, Rheometer, m-VROC, viscosity