Z-filters capable of cleaning particulate matter from airflow streams in dust collectors, including reverse flow, reverse air, and reverse pulse systems. Nodes of a plurality of functional categories, such as a data ingestion category and a data retrieval category are to be configured for the stream. The moisture level of the support and biomass are maintained at a level that optimizes pollutant removal and is a function of the relative solubility of the pollutant. The third dimensional alignment marking facilitates a horizontal alignment of putter’s striking face in a direction perpendicular to the ball-to-target line. The damper provides valved parallel flow between compression and rebound chambers through the soft channels and through the firm channels with independent spring rate control through the firm rebound and compression channels. The apparatus also includes a liquid collecting system that includes a liquid collection member having a mesh member through which a liquid is collected from a surface of an object opposite to the liquid collection member.