Analyses We perform the following analyses (follow the links for a brief description of the methodology for each procedure), with some selected interpretive assistance through our Diagnostic Plant offering. Sample drying and grinding Nitrate nitrogen Total nitrogen, Combustion Method Chloride Total sulfur Multi-element, ICP (dry ash method) “Total” Elemental, microwave Request Sheets Plant Analysis Request Sheet 2023-24 (xlsx)Diagnostic Plant Analysis Request Form 2023-24 (xlsx)