SAMPLE SIZE

To find the item you are testing for, first select one of the categories listed below, then scroll to the item of interest. Within each group, the items are listed alphabetically. Once you have found the item, read across the row for sample requirements. See Legend at the end of the bottom of this page for definitions. .....Bacterial Tests ....Inorganic and Metal Tests ....Organic Required Containers, Preservative and Holding Times       Sample   Maximum Name   Container Size Preservatives Hold Time Bacterial Tests           Coliform p or g 100 ml Cool, 4°C (39.2°F) 6 hours       0.008% Na2SO4     Fecal Strept. p or g 100 ml Cool, 4°C (39.2°F) 6 hours         0.008% Na2SO4   Inorganic & Metal Tests     Return to Top    Acidity p or g 100 ml Cool, 4°C (39.2°F) 14 days   Alkalinity p or g 100 ml Cool, 4°C (39.2°F) 14 days   Ammonia p or g 500 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2     BOD p or g 100 ml Cool, 4°C (39.2°F) 48 hours   COD p or g 50 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2     Chloride p or g 100 ml None Required 28 days   Chlorine p or g 100 ml None Required Immediate   Color p or g 100 ml Cool, 4°C (39.2°F) 48 hours   Cyanide, Total and/ p or g 500 ml Cool, 4°C (39.2°F) 14 days   or Amenable     NaOH, pH > 12     Fluoride p 100 ml None Required 28 days   Hardness p or g 100 ml HNO3, pH < 2 6 months   Hydrogen ion (pH) p or g 50 ml None Required Immediate   Kjeldahl p or g 500 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2     Organic Nitrogen p or g 1000 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2     Chromium VI p or g 100 ml Cool, 4°C (39.2°F) 24 hours   Mercury p or g 100 ml HNO3, pH < 2 28 days   Other Metals p or g 250 ml HNO3, pH < 2 6 months   Nitrate p or g 100 ml Cool, 4°C (39.2°F) 48 hours   Nitrate/Nitrite p or g 100 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2      Nitrate/Nitrite  p or g  100 ml  Cool, 4°C (39.2°F)  48 hours   Oil & Grease g 500 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2     Organic Carbon p or g 100 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2     Orthophosphate p or g 100 ml Filter Immediately 48 hours         Cool, 4°C (39.2°F)     Oxygen, Dissolved g 100 ml None Required Immediate     top & bottom        Phenols g 500 ml Cool, 4°C (39.2°F) 28 days         H2SO4, pH < 2     Phosphorus, total p or g 100 ml Cool, 4°C (39.2°F) 28 days         H2SO4     Residue, total p or g 1000 ml Cool, 4°C (39.2°F) 7 days   Residue, filterable p or g 1000 ml Cool, 4°C (39.2°F) 7 days   Residue, nonfilterable p or g 1000 ml Cool, 4°C (39.2°F) 7 days   Residue, settleable p or g 1000 ml Cool, 4°C (39.2°F) 48 hours   Residue, violatile p or g 1000 ml Cool, 4°C (39.2°F) 7 days   Spec. Conductance p or g 100 ml Cool, 4°C (39.2°F) 28 days   Sulfate p or g 100 ml Cool, 4°C (39.2°F) 28 days   Sulfide p or g 100 ml Cool, 4°C (39.2°F) 7 days         Zn Acetate +           NaOH, pH > 9     Surfactants p or g 500 ml Cool, 4°C (39.2°F) 48 hours   Temperature p or g 50 ml None Required Immediate   Turbidity p or g 100 ml Cool, 4°C (39.2°F) 48 hours Organic       Return to Top    Purgeable halocarbons g 2 - 40 ml Cool, 4°C (39.2°F) 14 days     teflon septeum vials   0.008% Na2SO4O3     Purgeable aromatic g 2 - 40 ml Cool, 4°C (39.2°F) 14 days   hydrocarbons teflon septeum vials   0.008% Na2SO4O3           HCl, pH < 2     Acrolein and acrylonitrile g 2 - 40 ml Cool, 4°C (39.2°F) 14 days     teflon septeum vials   0.008% Na2SO4O3     Phenols g 500 ml Cool, 4°C (39.2°F) 7 days until extraction     teflon lined cap   0.008% Na2SO4O3 40 days after extraction   Phthalate esters g 500 ml Cool, 4°C (39.2°F) 7 days until extraction     teflon lined cap     40 days after extraction   PCBs g 500 ml Cool, 4°C (39.2°F) 7 days until extraction   PCBs in oil g 40 ml Cool, 4°C (39.2°F) 7 days until extraction     teflon lined cap     40 days after extraction   Polynuclear aromatic g 500 ml Cool, 4°C (39.2°F) 7 days until extraction   halocarbons teflon lined cap   0.008% Na2SO4O3 40 days after extraction   Total organic halogens g 500 ml Cool, 4°C (39.2°F) 7 days     teflon lined cap   H2SO4, pH < 2     Pesticides g 500 ml Cool, 4°C (39.2°F) 7 days until extraction     teflon lined cap   pH 5 - 9 40 days after extraction

LEGEND .Container type: .Indicates type of container, glass (g) or polyethylene (p) .......Sample Size: .Unless otherwise noted, the sample size is in milliliters

. ..Preservatives: .Temperature and/or type of preservatives that may be required (see Key) Key Na2SO4 sodium sulfate Na2S4O3 sodium thiosulfate HNO3 nitric acid H2SO4 sulfuric acid NaOH sodium hydroxide HCl hydrochloric acid

Maximum Hold Time: .The elapsed time that the sample and/or the contaminant can be analyzed.

NOTE: .For soil samples, 1 or 2 4 0z. Glass jars with teflon lined cap (no preservative) will be sufficient for any or all analyses. The hold time for soil VOCs is 14 days. The hold time for soil semivolatile, PCB, or pesticide analyses is 14 days until extraction and 40 days after extraction.

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