Preface; Mapping of surface contaminants by tunable infrared-laser imaging; Monitoring cleanliness and defining acceptable cleanliness levels; Tracking surface ionic contamination by ion chromatography; A new method using MESERAN technique for measuring surface contamination after solvent extraction; Methods for pharmaceutical cleaning validations; Influence of cleaning on the surface of model glasses and their sensitivity to organic contamination; Decontamination of sensitive equipment; The fundamentals of no-chemistry process cleaning