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AOAC International's technical contributions center on the creation, validation, and global publication of reliable analytical test methods.Their areas of focus include, but are not limited to, safety of foods, beverages, dietary supplements, fertilizers, animal feeds, soil and water, and veterinary drugs. [3]
Water testing being conducted at a treatment facility in Broken Bow, Oklahoma. Water testing is a broad description for various procedures used to analyze water quality. Millions of water quality tests are carried out daily to fulfill regulatory requirements and to maintain safety. [1] Testing may be performed to evaluate:
Individuals interested in monitoring water quality who cannot afford or manage lab scale analysis can also use biological indicators to get a general reading of water quality. One example is the IOWATER volunteer water monitoring program of Iowa , which includes an EPT indicator key.
With food sourced around the world, it's necessary to monitor and test the food supply to detect, and contain outbreaks, such as E. coli in lettuce or Salmonella in peanut butter. Testing performed by public health laboratories is a critical link in the chain of detection to quickly identify the source of the outbreak and recall of unsafe products.
Soil and Water Assessment Tool (SWAT) is a free and open source hydrology model and GIS computer simulation sponsored by the USDA. SWAT is a well known geographic hydrological model in use by many universities and government agencies around the world, and integrates with commercial products like ArcGIS .
Traditionally, food companies would send food samples to laboratories for physical testing. Typical analyses include: moisture (water) by loss of mass at 102 °C; protein by analysis of total nitrogen, either by Dumas or Kjeldahl methods; total fat, traditionally by a solvent extraction, but often now by secondary methods such as NMR
The NSF also develops standards for and certifies water quality. [8] As of 2024 the US Environmental Protection Agency (EPA) sets limits on drinking water contaminants based on standards set by the NSF. [9] The NSF Consumer Products Division tests and certifies consumer products and appliances used in and around the home. [10] [11]
A soil test is a laboratory or in-situ analysis to determine the chemical, physical or biological characteristics of a soil. Possibly the most widely conducted soil tests are those performed to estimate the plant-available concentrations of nutrients in order to provide fertilizer recommendations in agriculture.