stability tests

What Types of Stability Tests are Performed?

Several types of stability tests are performed to evaluate different aspects of nanomaterial stability:

Physical Stability
Physical stability tests assess changes in the physical properties of nanomaterials, such as size, shape, and morphology. Techniques such as Dynamic Light Scattering (DLS), Transmission Electron Microscopy (TEM), and Scanning Electron Microscopy (SEM) are commonly used for these evaluations.

Chemical Stability
Chemical stability tests examine the chemical composition of nanomaterials over time. These tests help identify any chemical changes, such as oxidation, reduction, or hydrolysis. Analytical techniques like Fourier Transform Infrared Spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), and Mass Spectrometry (MS) are used to monitor chemical stability.

Biological Stability
Biological stability tests focus on the interactions between nanomaterials and biological systems. These tests are crucial for applications in drug delivery and biomedical imaging. They assess parameters such as cytotoxicity, biocompatibility, and bio-distribution. Techniques like cell viability assays, flow cytometry, and in vivo imaging are employed for these assessments.