Author Archives: Ragy Ragheb

Use the Zetasizer Advance Selector! What do we offer? In 2018, we launched two new Zetasizer systems to the long and successful lineage of Zetasizer instruments, the Zetasizer Pro and the Zetasizer Ultra. In the summer of 2020, we added…READ MORE >

They say that a picture is worth a thousand words….but what if you still have a thousand words? The Zetasizer ZS Xplorer software is a powerful tool for making your size and zeta potential measurements. There are several ways for…READ MORE >

Liposomes are attractive vehicles for drug payload delivery, among other nanoparticles helping to provide endless possibilities for tackling various pharmaceutical needs.  We provide solutions for the effective and optimal development of liposomes and other nanoparticles, which help ensure that only…READ MORE >

Particle characterization experts Dr. Maryam Hussain and Dr. Ragy Ragheb, answer your questions about the deformulation and characterization of liposome-based drug products.

Discover all the different types of measurements you can make – find the metric you want to measure and the cuvette that will help.

Lignin solvated in zwitterionic Good’s buffers displays antibacterial synergy against Staphylococcus aureus What is lignin? Lignin is a versatile aromatic polymer that forms key structural materials in plants and some algae.  They can be used in a wide range of…READ MORE >

What are asphalt emulsions and why are they important? They are liquid asphalt cement emulsified in water. They compose of bitumen, water, and an emulsifying agent or surfactant. Asphalt emulsions are integral to the optimum mechanical properties. Modified asphalt emulsions…READ MORE >

Messenger RNA (mRNA) based systems have recently attracted considerable attention for their use in the delivery of functional antibodies and therapeutic proteins. Both viral and non-viral vectors, including liposomes, polymeric nanoparticles, and mRNA-protein complexes, have been studied in clinic. Significant…READ MORE >

Liposomes have been attractive delivery systems for decades due to their composition of natural biological lipids and structural resemblance to cell membranes suggesting metabolic compatibility, low toxicity, biocompatibility and lack of a strong immune response1.  They are comprised of spherical…READ MORE >