Charts of sample holding times and containers needed for variety of analyzes.
Site has definitions of holding time from the United States Code of Federal Regulations.
Abstract of article on research on re-evaluation of holding times.
List of analytes and holding times with recommended volumes and container types - nitrite, nitrate, pH, turbidity, E. coli, ammonia, heavy metals, etc.
This website is an educational tool documenting the travels of educators and dogs setting out to document arctic climate change and explore the ecology of the area. They gathered scientific data...
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