This standard addresses process descriptions, process validation, cleanliness control and monitoring, recontamination prevention, quality assurance as follows: PROCESSES DESCRIPTIONS, including çø Detergent cleaning çø Alcohol cleaning çø Ultrapure water cleaning çø Liquid boundary layer disruption cleaning çø Multiple solvent cleaning (JPL procedure) çø Vacuum bakeout çø Supercritical fluids cleaning çø Carbon dioxide snow cleaning çø Plasma cleaning çø Pyrolysis çø Criteria for selecting other/novel processes PROCESS VALIDATION çø Test material selection çø Preparation of test materials for process application çø Deposition of contaminants çø Description of test conditions çø Verification of cleanliness level CLEANLINESS CONTROL AND MONITORING, including çø Micro/nano imaging techniques çø Spectrometry techniques çø Spectroscopy techniques çø Chromatography techniques RECONTAMINATION PREVENTION çø Packaging systems çø Protective covers çø Storage QUALITY ASSURANCE This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.