Abstract: Methods are disclosed for synthesizing a plurality of compounds on the surface of supports. The synthesis comprises a series of cycles of steps in which reagents for conducting the synthesis are deposited on the surface of the support to form the chemical compounds. At least one physical parameter of the deposition varies between cycles The method comprises conducting the synthesis in at least two sets of cycles, arbitrarily designated as a first set and a second set. Each cycle comprises at least one step of depositing reagents on a surface by means of droplet dispensing elements that traverse the surface of the support. At least one, and desirably all, of the following deposition parameters are employed as indicated: The number of times of repetition for a step of depositing reagents in at least one cycle of the second set is less than the number of times of repetition for a corresponding step in at least one cycle of the first set.

Abstract: Methods and devices for identifying a fluid on a substrate surface are provided. In accordance with the subject invention, fluid is deposited onto a substrate surface from a fluid deposition device, e.g., a pulse-jet fluid deposition device, to produce a spot of the fluid on the substrate surface. The fluid is identified by evaluating at least one physical characteristic of the deposited spot. Also provided are computer-readable mediums that include a program for controlling an apparatus, such as a fluid deposition device, e.g., a pulse-jet fluid deposition device, to measure at least one physical characteristic of a spot deposited on a substrate surface from a fluid deposition device and evaluate the measurement to identify the deposited fluid. Kits for use in practicing the subject methods are also provided.