Wet deposition subsamples for archive (NEON sample class: wdp_collection_in.chemSubsampleID). All samples are collected via an automated wet deposition collector, equipped with a retractable lid, two glass collection bottles, thermometer, and an optical precipitation detector. The optical precipitation detector opens with the onset of precipitation. This allows for all types of precipitation to enter the glass collection bottles located within the enclosure. Once precipitation has ceased (as detected by the optical precipitation detector), the retractable lid closes until the next precipitation event is detected. Samples are sent to an analytical facility for analysis of major ions, pH, and conductivity. The remaining (unused) portion of the sample is archived at 4 degrees Celsius for five years. See NEON Preventive Maintenance Procedure: Wet Deposition Collector, NEON User Guide To Wet Deposition Chemical Analysis, and CAL Quality Assurance Report 2016 (https://data.neonscience.org/documents) for more information about this sample class. NEON datasets (https://data.neonscience.org/home) associated with this sample class include Wet Deposition Chemical Analysis.