What is the advantage of contact spotting?

Contact spotting is very flexible and fast. It requires very low volumes and up to several hundreds different spots can be deposited. Different spot sizes can be chosen. The spot size depends on the number of spots on the surface of the prism and the type of needle used. The spot diameter can vary from 140 µm to 700 µm. Contact spotting can be used with any 2D surface chemistries. More information on the SPRi-Arrayer can be found here.

Different spot sizes obtained with the SPRi-Arrayer
Different spot sizes obtained with the SPRi-Arrayer