Dispersions of ink-jet pigments: using NMR relaxation measurements as a quality control tool

The application performance of any pigment is determined by its nature, including how it was manufactured, and the level of dispersion achieved in formulation. The most important physical properties include particle size and wetted surface area. The finer the particle size, the more intense will be the color; the greater the surface area, the greater will be the extent and uniformity of surface coating. For industries that must produce products with reliably consistent colors, measuring particle size and wetted surface area quickly and easily will aid in more efficient formulation and help to reduce production costs.

The speed and simplicity of NMR-based measurements with the Mageleka MagnoMeter make it an ideal tool for routine quality control purposes. The advantage of such measurements is that important characteristics of products, from fundamentals to end-use performance, can be monitored quickly and easily – and at virtually any industrially relevant solids concentration – thereby saving time and money.