samples Analyte-specific another sample aliquot. If still Sample per 20 samples exceeds if . See Table 2.3 References The NELAC Institute (2011). Volume 1, The NELAC Institute (). Management and Technical Requirements for Laboratories Performing Environmental Analyses, Module 4: Quality Systems for Chemical Testing. The NELAC Institute Standard EL-V1M4- EPA/600/R-97/072, September, 1997 Macdonald, R.W. and F.A. McLaughlin. 1982. The effect of storage by freezing on dissolved inorganic phosphate, nitrate and reactive silicate for samples from coastal and estuarine waters. Water Research. 16: 95104. Thayer, G.W. 1970. Comparison of two storage methods for the analysis of Nitrogen and Phosphorus fractions in estuarine water. Ches. Sci. 11:3, 155158. SECTION D ANALYTICAL METHODS
samples Sample per 20 samples Analyte-specific See Table 2.3 another sample aliquot. If still exceeds if . References The NELAC Institute (2011). Volume 1, The NELAC Institute (). Management and Technical Requirements for Laboratories Performing Environmental Analyses, Module 4: Quality Systems for Chemical Testing. The NELAC Institute Standard EL-V1M4- EPA/600/R-97/072, September, 1997 Macdonald, R.W. and F.A. McLaughlin. 1982. The effect of storage by freezing on dissolved inorganic phosphate, nitrate and reactive silicate for samples from coastal and estuarine waters. Water Research. 16: 95104. Thayer, G.W. 1970. Comparison of two storage methods for the analysis of Nitrogen and Phosphorus fractions in estuarine water. Ches. Sci. 11:3, 155158. SECTION D ANALYTICAL METHODS