Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (23) Silica |
APHA Method 4500-SiO2 C |
1998 |
Silica, Dissolved, Molybdosilicate Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (23) Silica |
APHA Method 4500-SiO2 C |
1997 |
Silica, Dissolved, Molybdosilicate Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (61) |
APHA Method 4500-SiO2 C |
1997 |
Silica, Dissolved, Molybdosilicate Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(b)(10)(xlviii) |
APHA Method 4500-SiO2 |
1997 |
Silica |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(b)(10)(xlix) |
APHA Method 4500-S2-- |
2000 |
Sulfide |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (66) |
APHA Method 4500-S(2-) G |
2000 |
Sulfide (as S), Ion-Selective Electrode Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (66) |
APHA Method 4500-S(2-) F |
2000 |
Sulfide (as S), Iodometric Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (66) |
APHA Method 4500-S(2-) D |
2000 |
Sulfide (as S), Methylene Blue Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (66) |
APHA Method 4500-S(2-) C |
2000 |
Sulfide (as S), Sample Pretreatment to Remove Interfering Substances or to Concentrate the Sulfide |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (66) |
APHA Method 4500-S(2-) B |
2000 |
Sulfide (as S), Separation of Soluble and Insoluble Sulfides |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (50) |
APHA Method 4500-P H |
1999 |
Phosphorus, Manual Digestion and Flow Injection Analysis for Total Phosphorus |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (44) |
APHA Method 4500-P G |
1999 |
Phosphorus, Flow Injection Analysis for Orthophosphate |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (50) |
APHA Method 4500-P G |
1999 |
Phosphorus, Flow Injection Analysis for Orthophosphate |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (50) |
APHA Method 4500-P F |
1999 |
Phosphorus, Automated Ascorbic Acid Reduction Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (20) Ortho-phosphate |
APHA Method 4500-P F |
1992 |
Phosphorus, Automated Ascorbic Acid Reduction Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (20) Ortho-phosphate |
APHA Method 4500-P F |
1998 |
Phosphorus, Automated Ascorbic Acid Reduction Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (44) |
APHA Method 4500-P F |
1999 |
Phosphorus, Automated Ascorbic Acid Reduction Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (20) Ortho-phosphate |
APHA Method 4500-P E |
1998 |
Phosphorus, ascorbic acid method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (50) |
APHA Method 4500-P E |
1999 |
Phosphorus, ascorbic acid method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (44) |
APHA Method 4500-P E |
1999 |
Phosphorus, ascorbic acid method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (20) Ortho-phosphate |
APHA Method 4500-P E |
1992 |
Phosphorus, ascorbic acid method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (20) Ortho-phosphate |
APHA Method 4500-P E |
1995 |
Phosphorus, ascorbic acid method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (50) |
APHA Method 4500-P B |
1999 |
Phosphorus, Sample Preparation |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(b)(10)(xlvii) |
APHA Method 4500-P |
1999 |
Phosphorus |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.74(a)(2) Table (Ozone) |
APHA Method 4500-O3 B |
1997 |
Ozone, Indigo Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.74(a)(2) Table (Ozone) |
APHA Method 4500-O3 B |
2014 |
Ozone, Indigo Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (46) |
APHA Method 4500-O G |
2001 |
Oxygen, dissolved, mg/L, Membrane Electrode Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (46) |
APHA Method 4500-O F |
2001 |
Oxygen, dissolved, mg/L, Copper Sulfate-Sulfamic Acid Flocculation Modification |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (46) |
APHA Method 4500-O E |
2001 |
Oxygen, dissolved, mg/L, Alum Flocculation Modification |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (46) |
APHA Method 4500-O D |
2001 |
Oxygen, dissolved, mg/L, Permanganate Modification |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (46) |
APHA Method 4500-O C |
2001 |
Oxygen, dissolved, mg/L, Azide Modification |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (46) |
APHA Method 4500-O B |
2001 |
Oxygen, dissolved, mg/L, Iodometric Methods |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(b)(10)(xlvi) |
APHA Method 4500-O |
2001 |
Oxygen (Dissolved) |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (31) |
APHA Method 4500-Norg D |
1997 |
Nitrogen (Organic) by Semi-micro Kjeldahl Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (31) |
APHA Method 4500-Norg C |
1997 |
Nitrogen (Organic) by Semi-micro Kjeldahl Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (31) |
APHA Method 4500-Norg B |
1997 |
Nitrogen (Organic) by Macro Kjeldahl Method |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(b)(10)(xlv) |
APHA Method 4500-Norg |
1997 |
Nitrogen (Organic) |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (39) |
APHA Method 4500-NO3 H |
2000 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (19) Nitrite |
APHA Method 4500-NO3 F |
2000 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (18) Nitrate |
APHA Method 4500-NO3 F |
2000 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (18) Nitrate |
APHA Method 4500-NO3 F |
1992 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (18) Nitrate |
APHA Method 4500-NO3 F |
1995 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (18) Nitrate |
APHA Method 4500-NO3 F |
1998 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (39) |
APHA Method 4500-NO3 F |
2000 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 136.3(a) Table IB (40) |
APHA Method 4500-NO3 F |
2000 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (19) Nitrite |
APHA Method 4500-NO3 F |
1992 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (19) Nitrite |
APHA Method 4500-NO3 F |
1995 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (19) Nitrite |
APHA Method 4500-NO3 F |
1998 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (18) Nitrate |
APHA Method 4500-NO3 E |
2000 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |
Environmental Protection Agency |
|
40 CFR 141.23(k)(1) Table (19) Nitrite |
APHA Method 4500-NO3 E |
1992 |
Nitrate Nitrogen by Selective Electrode |
American Public Health Association |