A permeameter having a hollow tube with a second tube slidably disposed within an internal chamber of the hollow tube, used in combination with one or more tables each of which correlates a specific rate of reading fall rate of water within the hollow tube with a unique soil hydraulic capacity of the soil being tested. The state is based on a user interaction, or a lack of user interaction, with the device. A drying method includes: immersing a substrate into a fluid contained in a bath; removing the substrate from the fluid into a chamber; and supplying isopropyl alcohol and hydrofluoroether to an interface between the substrate and the fluid. Subsequent combination of the structures with photovoltaic cells allows facile and efficient completion of modular arrays. The invention also provides pharmaceutically acceptable compositions comprising said compounds and methods of using the compositions in the treatment of various disease, conditions, or disorders. The method includes the deposition of the dielectric material from a first precursor which is an carbosilane or an alkoxycarbosilane molecule.