Hudson Surface Technology

These plates are designed for Laser Desorption Ionization MS for small molecules. They combine a hydrophilic silica surface sample spot on an otherwise hydrophobic sample plate of matrix. This yields reproducible, uniform spots in the same way as uFocus sample plates. They are also pre-spotted with a small amount of matirx, for efficient ionization.

In the figure at left, spectra are compared for Verapamil on

(a) bare SS surface, relative principal ion intensity = 1.0

(b) uFocus with DHB, relative principal ion intensity = 9.2

(c) SiO2 only, relative principal ion intensity = 1.7 and

(d) SiO2 with DHB, relative principal ion intensity = 14.0.

Spectrum D shows the best combination of intensity and freedom from interfering peaks.