Common use of NUTRIENT GROUP Clause in Contracts

NUTRIENT GROUP. Nutrient samples will be submitted for analysis in two or three containers: one acidified with analytical grade sulfuric acid for analysis of nitrate, ammonia, total Kjeldahl nitrogen (TKN), and total phosphate; and one or two unpreserved for the remaining analyses. Seawater and fresh water samples will be treated similarly, with the exception of the ammonia and Kjeldahl nitrogen analyses. During the nesslerization of seawater, one milliliter of Xxxxxxxx Salts is added to minimize the interferences caused by the cations and anions in the seawater samples. Contractor will conduct analyses using the following methods or approved equivalent: Conductivity 2510 B. 120.1 Turbidity 2130 B. 180.1 pH 4500-H+ B. 150.1 Nitrate+Nitrite Nitrogen (NO2+NO3 as N) 4500-NO3 F. 353.2 Ammonia Nitrogen (NH3 as N) 4500-NH3 B. 350.1 4500-NH3 C. 350.1 4500-NH3 E. 350.1 Total Kjeldahl Xxxxxxxx (XXX) 0000-Xxxx B. 351.2 Total Phosphorus as Phosphate(PO4) 4500-P B1. 365.3 4500-P B2. 365.3 4500-P B3,4. 365.3 4500-P E. 365.3 Orthophosphate as P 4500-P E 365.3 Total Suspended Solids(TSS) 2540 D. 160.2 Volatile Suspended Solids 2540 E. 160.4

NUTRIENT GROUP. Nutrient samples will be submitted for analysis in two or three containers: one acidified with analytical grade sulfuric acid for analysis of nitrate, ammonia, total Kjeldahl nitrogen (TKN), and total phosphate; and one or two unpreserved for the remaining analyses. Seawater and fresh water samples will be treated similarly, with the exception of the ammonia and Kjeldahl nitrogen analyses. During the nesslerization of seawater, one milliliter of Xxxxxxxx Salts is added to minimize the interferences caused by the cations and anions in the seawater samples. Contractor will conduct analyses using the following methods or approved equivalent: Conductivity 2510 B. 120.1 Turbidity 2130 B. 180.1 pH 4500-H+ B. 150.1 Nitrate+Nitrite Nitrogen (NO2+NO3 as N) 4500-NO3 F. 353.2 Ammonia Nitrogen (NH3 as N) 4500-NH3 B. 350.1 4500-NH3 C. 350.1 4500-NH3 E. 350.1 Total Kjeldahl Xxxxxxxx Nitrogen (XXXTKN) 00004500-Xxxx Norg B. 351.2 Total Phosphorus as Phosphate(PO4) 4500-P B1. 365.3 4500-P B2. 365.3 4500-P B3,4. 365.3 4500-P E. 365.3 Orthophosphate as P 4500-P E 365.3 Total Suspended Solids(TSS) 2540 D. 160.2 Volatile Suspended Solids 2540 E. 160.4