Packaged Equipment, Packaging, Packaging Material, Pandemic Disease, PAR(Proven Acceptable Range), Parentral Drug(LVP and SVP), Particle, Particle Size, Particle Concentration, Parts per Billion(PPB), Parts Per Million(PPM), Passive Immunity, Passivity, Passivation, Passive Layer, Pasteurization, Pathogen, Pathogenic, Pathogenic Organisms, PE(Polyethylene), Penetrance, Penicillin, Penicillium, Peptide Hormones, Percent Recovery, Percent Rejection, Peristaltic Pump, Permeability, Permissible Exposure Limit(PEL), Permissions or Previleges, Peroxisome, Petrolatum, pH, Phage, Pharmaceutical, Pharmaceutical Area, Phenol, Physical Hazard, Photoautotrophs, Photoluminescent, Photo Oxidation, Physical Barrier, Physical Manipulation, Particulate, Next 46 - 90 Words, Next 90 - 144 Words

Percent Rejection
In reverse osmosis or ultrafiltration, the ratio of impurities removed to total impurities in the incoming feedwater. For example, RO membranes typically remove (reject) 90% of the dissolved inorganic contaminants in water