PRESERVATION & SAMPLE SIZE REQUIREMENTS

WATER & WASTEWATER ANALYSIS

Individual Chemical Tests
  Heavy Metals & Minerals in Liquid Samples
Pesticides & Herbicides 

 

INDIVIDUAL CHEMICAL TESTS
TEST VOLUME   CONTAINER   PRESERVATION   HOLD TIME
Alkalinity 100 mL   P ,G   Cool, 4C   14 days
Biochemical Oxygen Demand 1000 mL   P, G   Cool, 4C   48 hours
Bicarbonate 100 mL   P, G   Cool, 4C   14 days
Carbonate 100 mL   P, G   Cool, 4C   14 days
Chemical Oxygen Demand 50 mL   P, G   Cool, 4C, H2SO4 to pH < 2   28 days
Chloride 100 mL   P, G   Cool, 4C   28 days
Chlorine (Total Residual) 200 mL   P, G   None Required   Immediate
Chlorine (Free Residual) 200 mL   P, G   None Required   Immediate
Color 50 mL   P, G   Cool, 4C   48 hours
Conductance 100 mL   P, G   Cool, 4C   28 days
Cyanide 1000 mL   P, G   Cool, 4C, NaOH to pH 12, 0.6g ascorbic   14 days
Hardness 100mL   P, G   HNO3 to pH <2   6 months
Nitrogen, Ammonia 400 mL   P, G   Cool, 4C, H2SO4 to pH <2   28 days
Nitrogen, Nitrate 100 mL   P, G   Cool, 4C, H2SO4 to pH <2   14 days
Nitrogen, Nitrite 100 mL   P, G   Cool, 4C 4   8 hours
Nitrogen, Nitrate/Nitrite 200 mL   P, G   Cool, 4C   14 days
Nitrogen, Organic 1000 mL   P, G   Cool, 4C, H2SO4 to pH <2   28 days
Nitrogen, Total (TKN) 500 mL   P, G   Cool, 4C, H2SO4 to pH <2   28 days
Oil & Grease 1000 mL   G only   Cool, 4C, H2SO4 to pH <2   28 days
Ph 25 mL   P, G   None Required   Immediate
Sulfate (as S) 100mL   P, G   Cool, 4C   28 days
Phosphorus, Ortho 50 mL   P, G   Filter, Cool,4 C   48 hours
Phosphorus, Total 50 mL   P, G   Cool, 4C, H2SO4 to pH <2   28 days
Solids, Dissolved 100 mL   P, G   Cool, 4C   7 days
Solids, Settleable 100 mL   P, G   Cool, 4C   48 hours
Solids, Suspended 100 mL   P, G   Cool, 4C   7 days
Solids, Total 100 mL   P, G   Cool, 4C   7 days
Solids, Volatile 100 mL   P, G   Cool, 4C   7 days
Turbidity 100 mL   P, G   Cool, 4C   48 hours
Total Dissolved Salts 100 mL   P, G   Cool, 4C   28 days

HEAVY METALS & MINERALS IN LIQUID SAMPLES

TEST VOLUME   CONTAINER   PRESERVATION   HOLD TIME
Aluminum 100 mL   P , G   HNO3 to pH < 2   6 months
Antimony 100 mL   P , G   HNO3 to pH < 2   6 months
Arsenic 100 mL   P , G   HNO3 to pH < 2   6 months
Barium 100 mL   P , G   HNO3 to pH < 2   6 months
Boron 100 mL   P , G   HNO3 to pH < 2   6 months
Cadmium 100 mL   P , G   HNO3 to pH < 2   6 months
Calcium 100 mL   P , G   HNO3 to pH < 2   6 months
Chromium 100 mL   P , G   HNO3 to pH < 2   6 months
Cobalt 100 mL   P , G   HNO3 to pH < 2   6 months
Copper 100 mL   P , G   HNO3 to pH < 2   6 months
Gold 100 mL   P , G   HNO3 to pH < 2   6 months
Iron 100 mL   P , G   HNO3 to pH < 2   6 months
Lead 100 mL   P , G   HNO3 to pH < 2   6 months
Magnesium 100 mL   P , G   HNO3 to pH < 2   6 months
Manganese 100 mL   P , G   HNO3 to pH < 2   6 months
Mercury 100 mL   P , G   HNO3 to pH < 2   6 months
Molybdenum 100 mL   P , G   HNO3 to pH < 2   6 months
Nickel  100 mL   P , G   HNO3 to pH < 2   6 months
Phosphorus   100 mL   P , G   HNO3 to pH < 2   6 months
Platinum   100 mL   P , G   HNO3 to pH < 2   6 months
Potassium  100 mL   P , G   HNO3 to pH < 2   6 months
Selenium  100 mL   P , G   HNO3 to pH < 2   6 months
Silver  100 mL   P , G   HNO3 to pH < 2   6 months
Sodium  100 mL   P , G   HNO3 to pH < 2   6 months
Tin  100 mL   P , G   HNO3 to pH < 2   6 months
Zinc   100 mL   P , G   HNO3 to pH < 2   6 months

PESTICIDES & HERBICIDES

Samples submitted for any pesticide or herbicide analysis should be collected in glass only.

All samples should be cooled to four degrees C. A volume of one liter is required for extraction.

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