The Sea of Unknowns. Waste Hazard Characterization and Bulk Identification. Allergens. Indoor Air Quality. Air Pollution. Allergenicity, Plant Pollen, and Mold Spores: Allergenic Mechanism. Allergy-Related Symptoms. Plant Pollen and Microbial Spores. Strategic Approaches to Air Sample Collection. Air Sampling Methodologies. Analytical Protocols. Interpretation of Results. Viable Microbial Allergens: Types of Viable Allergenic Microbes. Air Sampling Methodologies. Interpretation of Results. Airborne Pathogens/Microbial Toxins: Airborne Pathogenic Fungi. Mycotoxins. Airborne Pathogenic Bacteria. Bacterial Endotoxins. Pathogenic Protozoa. Viruses. Diagnostic Sampling Methodologies. Animal Allergenic Dust: Animal Allergens. Occurrence of Animal Allergens. Sampling Strategy. Screening for Rodents. Sampling Procedures. Analytical Methods. Interpretation of Results. Other Types of Allergenic Substances. Rapid Microbial Fingerprinting: Polymerase Chain Reaction. Bacterial Identification. Forensics of Environmental Dust: Environmental Uses for Forensic Microscopy. Sampling Methodologies. Analytical Procedures. Specialized Microscopic Techniques. Commercial Laboratories. Volatile Organic Compounds: Published Sampling and Analytical Methods. Sampling Strategy. Screening Procedures. Solid Sorbent Sampling. Bulk Air Sampling. Bulk Sampling. Interpretation of Results. Carcinogens/Mutagens: Overview of Mutagenicity Tests. Environmental Uses for Mutagenicity Tests. Sampling Methodologies. Analytical Methodology. Interpretation of Results. Product Emissions: Uses for Product Emissions Testing. Measuring Units and Examples. Sampling Methodologies. Analytical Methodology. Interpretation of Results. Index: