Water, Wastewater, Produced Water, Process Water Water or wastewater samples may require digestion or other sample preparation prior to analysis in compliance with certain methods and protocols. See the Sample Preparation and/or Sample Preparation for Metals sections for applicable charges. Analyte                                                Symbol                                        Method      Aluminum                                          Al                                             AA     Ammonia                                           NH3-N                                     Salicylate Colorimetric    Antimony                                            Sb                                           AA Arsenic                                               As                                           GF-AAS Barium                                                Ba                                           AA   Boron                                                   B                                             Carmine Photometric   Cadmium                                            Cd                                           AA Calcium                                               Ca                                           AA    Carbon Dioxide                                  tCO2                                      Gas Sensing Electrode                                                                                                         ASTM D513-82F Carbonate                 Carbonate                                           CO3=                                         Calculated Bicarbonate                                        HCO3                                         Calculated Carbon, Total Organic                      TOC                                        Persulfate Digestion-CO2 Chloride                                                Cl-                                          Mercuric Nitrate Titration         Chlorine, Total, Free                          Cl2                                         Idometric Titration         Chromium, Hexavalent                     Cr+6                                      Diphenylcarbohydrazine          Chromium                                            Cr                                          AA        Cobalt                                                    Co                                         AA         Chemical Oxygen Demand              COD                                      Dichromate         Conductivity                                         Electrode                                       Copper                                                  Cu                                         AA         Cyanide, Free                                       fCN-                                      ISE  Standard Addition                                                                                                          Eh (ORP)                                                 Eh                                        ORP Electrode        Fluoride                                                   F-                                         ISE  Standard Addition         Free Acid as Sulfuric Acid                  FA                                        pH Titration         Hardness, Ca + Mg                               Hardness                          AA        Iron                                                            Fe                                       AA         Iron, Ferrous                                           Fe+2                                   Dichromate Redox Titration        Iron, Ferrous                                           Fe+2           1-,10 Phenanthroline 255 (0.02-3.00mg/L)        Iron, Ferric                                               Fe+3                                   Difference tFe- Fe+2        Lead                                                         Pb                                       AA                 Lithium                                                     Li                                        AA                 Magnesium                                             Mg                                      AA         Manganese                                             Mn                                      AA                 Molybdenum                                           Mo                                      AA                Molybdenum as Mo+6                          Mo+6                                 Ternary Complex         Nickel                                                       Ni                                        AA Nitrate                                                      NO3-N                                Dimethylphenol Nitrite                                                       NO2-N                                Diazotization pH                                                                                                          Electrometric Phosphorous, Ortho, Reactive          PO4-3-P                            Ascorbic Acid Phosphorous, Total                              tP                                        Digestion-Ascorbic Acid Potassium                                              K                                         AA Scandium                                               Sc                                       AA        Selenium                                                 Se                                       XRF Te Copreciptation Selenium                                                 Se                                       GF-AAS    Silica                                                        SiO2                                   Silicomolybdate Silicon                                                      Si                                       AA Silver                                                        Ag                                      AA Sodium                                                    Na                                      AA Solids, Total                                           TS                                      Gravimetric Solids, Dissolved                                  TDS                                   Gravimetric Solids, Suspended                               TSS                                   Gravimetric Specific Gravity                                     S.G.                                   Gravimetric Strontium                                                Sr                                      AA                                                                                Sulfate                                                     SO4                                   Turbidimetric Sulfide, Free                                           S-2                                     ISE Thallium                                                   Tl                                       AA Thiocyanate                                            SCN                                   Photometric Titanium                                                   Ti                                       AA Turbidity                                                   NTU                                  Nephelometric Vanadium                                                 V                                      AA Zinc                                                            Zn                                    AA Salinity                                                      NaCl                                Conductivity Meter Total Metals Digestion                          Acid Digestion Total Dissolved Solids                         TDS                                Conductivity (Meter) Guar, Carbohydrate                              Guar                               Phenol-Sulfuric Acid                                              Back to Services