Laboratory and Field Glossary
There are 196 entries in this glossary.T
Term | Definition |
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Tape Lift |
A technique for collecting relatively dry fungi by “sticking†or “lifting†the suspected fungus with the adhesive side of clear (not frosted) tape. This can later be transferred to a microscope slide for direct analysis.
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Taxa/Taxon/Taxonomic |
The classification and grouping of organisms (living or post
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TCLP |
Toxicity Characteristic Leaching Procedure used to determine the federal Resources Conservation Recovery Act (RCRA) lead hazardous waste limits. If the results equal or exceed 5 mg/L the waste is deemed to be hazardous.
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Thallus |
Hypha involved in conversion to spore formation.
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Total Cell Count |
Cell count that includes both viable and non viable cells.
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Toxicity |
The (measured) ability of a substance, organism to be poisonous.
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Toxigenic |
Toxin producing. Ex: “Female Blackwidows are toxigenic.â€
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Transite |
A trade name for asbestos cement wallboard or pipe.
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Transmission Electron Microscopy (TEM) |
State-of-the-art analytical method for air and bulk sample analysis. Uses high magnification (typically 15,000x) to identify asbestos fibers. May utilize Energy Dispersive Spectroscopy (EDS) and/or Selected Area Electron Diffraction (SAED) to confirm asbestos and to identify the type of asbestos present. Recommended for final clearance air samples and for bulk analysis of samples with difficult-to-analyze matrices (e.g., plaster, vinyl tile). Provides the most definitive analysis of asbestos currently available.
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TTLC |
Total Threshold Limit Concentration used in the State of California in conjunction with STLC to determine lead hazardous waste limits. If the results are equal to or exceeds 1000 mg/kg, the waste is deemed to be hazardous.
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