A processing apparatus for an inkjet printer includes a bus. By contamination-free transfer of liquid it is meant that during the transfer process there is no leakage of the liquid or air contaminated by the liquid or vapors of the liquid to the surroundings and also that no contaminants from the surroundings come into contact with the liquid. for a mass spectrometer, that produces ions by atmospheric pressure photoionization. Still further provided by the invention are methods for producing soybean plants by crossing the soybean variety A1015901 with itself or another soybean variety and plants produced by such methods.