| Acronym | Meaning |
| GFF | Glass Fiber Filter |
| NELAP | National Environmental Laboratory Accreditation Program |
| AAO | Amino Acid Oxidase |
| NCSE | National Council For Science And The Environment |
| CMS | Complete Model Space (in Many-body Calcns.) |
| AGP | Algal Growth Potential |
| IFM | Immunofluorescence Microscopy |
| DIET | Desorption Induced By Electronic Transitions |
| SURE | Sulfate Regional Experiment |
| WSHS | Watershed Hydrologic System |