Wire mesh demister density and thickness should be verified using a defined measurement condition, mesh-only weight basis where appropriate, multiple thickness readings, and checks for uniformity across sections.

Pre-shipment inspection of structured packing should confirm corrugation geometry, sheet thickness, surface features, element dimensions, edge construction, orientation, and cleanliness against the approved design.

Ceramic packing lot release should connect production-lot identification, package marks, required tests, COA results, and sampling records so that the certificate represents the actual material shipped.

Plastic packing should be inspected for complete molding, acceptable flash, controlled warpage, structural cracks, gate condition, contamination, and lot consistency using representative samples across the shipment.

Visual acceptance criteria for stamped metal random packing should distinguish functional defects from minor cosmetic variation. Inspection should focus on geometry, structural integrity, cleanliness, and production consistency.