Viscosity data for alcoholic beverages of various sugar and alcohol percentages was obtained using m-VROC®. The measured viscosity of these commonly consumed beverages was found to be dependent upon the amount of water, alcohol and sugar within the fluid. The viscosity of ethanol water solutions had a parabolic relationship as the amount of ethanol in solution increased. The addition of sugar to alcoholic beverages was also increased the viscosity of these fluids. Shear rate sweeps were performed to confirm Newtonian behavior of alcoholic beverage solutions over the
We recently took two commercially available cannabis oil cartridges used to refill cannabis pens and measured the viscosity. The two main differences were the variation in THC and CBD Oils. Sample 1 had 78% THC and 0.29% CBD content. Sample 2 had 80 % THC and 0% CBD.
Excipients are a substance that is often added to protein formulations to serve as a medium for the proteins or active substance in the formulation. While commonly perceived as inert and just a supplement to improve the formulation or become a diluent, adding excipients have sometimes created a reaction of the ingredients in the formulation and according to the NPS Medicinewise article*, such reactions have resulted in various reactions in patients as well.
On April 12, 2019, a new paper, "Effective Vaccination against Middle East Respiratory Syndrome Corona-virus," that focuses on the threat of emerging infectious pathogens and methods to develop vaccines to combat has been published. Diving into further details into pathogens such as Middle East respiratory syndrome corona-virus (MERS-CoV), it is important to understand the history of the disease, MERS.
One of the common questions we get from our customers is, “Which chip do I use to test my fluid?” RheoSense has a variety of different chips and you may wonder which chip would be the best for your application. The m-VROC® has four different designations of chips: A, B, C, and E. These letter values reference the max pressure capability of the MEMS pressure sensors inside the microfluidic flow cell. With the A-series being able to measure the lowest pressures for low viscosity fluids, the E-series are able to measure the highest pressures for higher viscosities and higher shear rates.
Laponite is an additive which is by definition, "a unique specialty additive; a layered silicate manufactured from naturally occurring inorganic mineral sources." The main purpose in which Laponite serves can be separated into two major uses:
1) Rheology Modifier — Laponite is added to various consumer products to improve stability; many products have been shear sensitive or thixotropic behavior. Laponite is often used as a thickener in cosmetics.
2) Film Former — Laponite produces film to create electrically conductive coatings
Aside from these two major uses, Laponite has been used in the healthcare industry as a bioink additive to hydrogels, enabling a habitable environment for stem cells and also playing a role in creating a biodegradable containment for drug delivery.
*Lu's Corner is a new concept hosted by our Technical Specialist, Lu Lu. Lu has been a Technical Specialist with RheoSense for over 2 years. Through meticulous customer relationship development and continuous exploration of new applications, Lu has been able to provide a level of outstanding customer service and support.
What do we talk about when we talk about viscosity? A series stories of viscosity in life.
Story One - Cosmos and Cosmetics
Did you know that even a deadweight machine that is capable of applying 4,448,222 Newtons or 1 million pounds of force?