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Wastewater/Groundwater Holding Times

Tests, Bottles, Preservation and Holding Times

DESCRIPTION BOTTLE PRESERVATION MAXIMUM TIME
MERCURY, LOW LEVEL 500 ML GLASS 2.5 ML BRCL (WITHIN 48 HOURS) 90 DAYS
T.SOLIDS,% 250 ML PLASTIC ≤ 6 ° C 7 DAYS
T.VOL.SOLIDS,% 250 ML PLASTIC ≤ 6 ° C 7 DAYS
ACUTE BIOASSAY 1-1 GAL. CUBITAINER ≤ 6 ° C 36 HOURS
ACIDITY 500 ML PLASTIC ≤ 6 ° C 14 DAYS
ALKALINITY 500 ML PLASTIC ≤ 6 ° C 14 DAYS
BOD 1-LITER PLASTIC ≤ 6 ° C 48 HOURS
BROMIDE 500 ML PLASTIC ≤ 6 ° C 28 DAYS
CHRONIC BIOASSAY 2-1 L CUBITAINER ≤ 6 ° C 36 HOURS
CHLORIDE 250 ML PLASTIC NONE 28 DAYS
CHLOROPHYLL A 500 ML AMBER PLAS ≤ 6 ° C 14 DAYS
CYANIDE 250 ML PLASTIC ≤ 6 ° C, 3 NAOH PELLETS *** 14 DAYS
COD 250 ML PLASTIC ≤ 6 ° C, 1.5 ML H2SO4 28 DAYS
COLOR 250 ML PLASTIC ≤ 6 ° C 48 HOURS
CONDUCTIVITY 250 ML PLASTIC ≤ 6 ° C 28 DAYS
ENTEROCOCCI 120 ML PLASTIC < 10 ° C, SODIUM THIOSULFATE 6 HOURS
FECAL COLIFORM 250 ML P (STERILE) < 10 ° C, SODIUM THIOSULFATE 6 HOURS
FECAL COLIFORM ON SOLID 250 ML P (STERILE) < 10 ° C 24 HOURS
FERROUS IRON 500 ML PLASTIC 10 ML HCL 14 DAYS
FLUORIDE 500 ML PLASTIC NONE 28 DAYS
HARDNESS 500 ML PLASTIC 3 ML H2SO4 6 MONTHS
MBAS 1-LITER PLASTIC ≤ 6 ° C 48 HOURS
MIXED LIQUOR SUSP. SOLIDS 250 ML PLASTIC ≤ 6 ° C 7 DAYS
MIXED LIQUOR VOL. SUSP. SOLIDS 250 ML PLASTIC ≤ 6 ° C 7 DAYS
TOTAL COLIFORM 250 ML P (STERILE) < 10 ° C, SODIUM THIOSULFATE 6 HOURS
AMMONIA NITROGEN 250 ML PLASTIC ≤ 6 ° C, 1.5 ML H2SO4 28 DAYS
NITRITE NITROGEN 250 ML PLASTIC ≤ 6 ° C 48 HOURS
NITRATE NITROGEN 250 ML PLASTIC ≤ 6 ° C 48 HOURS
NO2 + NO3 250 ML PLASTIC ≤ 6 ° C, 1.5 ML HSS04 28 DAYS
OIL & GREASE 1-LITER GLASS ≤ 6 ° C, 4.5 ML H2SO4 28 DAYS
ORTHO PHOSPHATE 250 ML PLASTIC ≤ 6 ° C 48 HOURS
PH 250 ML PLASTIC ≤ 6 ° C 15 MINUTES
PHENOL (INORGANIC) 1 L AMBER GLASS ≤ 6 ° C, 4.5 ML H2SO4 28 DAYS
PHOSPHORUS,TOTAL 250 ML PLASTIC ≤ 6 ° C, 1.5 ML H2SO4 28 DAYS
PHENOL (GC) 2-1 L AMBER GLASS ≤ 6 ° C 7 DAYS TO EXT
SALINITY 250 ML PLASTIC ≤ 6 ° C 28 DAYS
SETTLEABLE MATTER 1 L PLASTIC ≤ 6 ° C 48 HOURS
SULFATE 500 ML PLASTIC ≤ 6 ° C 28 DAYS
SULFIDE 250 ML PLASTIC ≤ 6 ° C, 2 NAOH PELLETS & 10 DROPS ZN ACETATE 7 DAYS
TOTAL DISSOLVED SOLIDS 500 ML PLASTIC ≤ 6 ° C 7 DAYS
TOTAL SUSPENDED SOLIDS 1-LITER PLASTIC ≤ 6 ° C 7 DAYS
TOTAL SOLIDS 500 ML PLASTIC ≤ 6 ° C 7 DAYS
TOTAL KJELDAHL NITROGEN 250 ML PLASTIC ≤ 6 ° C, 1.5 ML H2SO4 28 DAYS
TOTAL ORGANIC CARBON 250 ML PLASTIC ≤ 6 ° C, 1.5 ML H2SO4 28 DAYS
TURBIDITY 250 ML PLASTIC ≤ 6 ° C 48 HOURS
EPA METHOD 601 2-40 ML VIALS ≤ 6 ° C, 8 DROPS HCL(50%) 14 DAYS
EPA METHOD 602 2-40 ML VIALS ≤ 6 ° C, 8 DROPS HCL(50%) 14 DAYS
EPA METHOD 608 2-1 L AMBER GLASS ≤ 6 ° C 7 DAYS TO EXT
SM 6200C 2-40 ML VIALS ≤ 6 ° C, 8 DROPS HCL(50%) 14 DAYS
EPA METHOD 624 2-40 ML VIALS ≤ 6 ° C, 8 DROPS HCL(50%) 14 DAYS
EPA METHOD 625 (BNA) 2-1 L AMBER GLASS ≤ 6 ° C 7 DAYS TO EXT
EPA METHOD 8081 2-1 L AMBER GLASS ≤ 6 ° C 7 DAYS TO EXT
EPA METHOD 8151 2-1 L AMBER GLASS ≤ 6 ° C 7 DAYS TO EXT
EPA METHOD 8260 2-40 ML VIALS ≤ 6 ° C, 8 DROPS HCL(50%) 14 DAYS
EPA METHOD 8270 2-1 L AMBER GLASS ≤ 6 ° C 7 DAYS TO EXT

*** NOTE: ADD ENOUGH SODIUM THIOSULFATE TO CHLORINATED SAMPLES TO REMOVE RESIDUAL CHLORINE.

NAOH = Sodium Hydroxide    HCL = Hydrochloric Acid    H2SO4 = Sulfuric Acid    BRCL = Bromine Monochloride    HNO3 = Nitric Acid


Metals

Ag SILVER Cd CADMIUM Mg MAGNESIUM Se SELENIUM
Al ALUMINUM Co COBALT Mn MANGANESE Si SILICA
As ARSENIC Cr CHROMIUM Mo MOLYBDENUM Sn TIN
Ba BARIUM Cu COPPER Na SODIUM Tl THALLIUM
Be BERYLLIUM Fe IRON Ni NICKEL U URANIUM
Bo BORON Hg MERCURY Pb LEAD V VANADIUM
Ca CALCIUM K POTASSIUM Sb ANTIMONY Zn ZINC
PRESERVATION FOR WASTEWATER: NITRIC ACID (HNO3) -- CAN BE ADDED WHEN RETURNED TO LAB
  FOR DRINKING WATER: HOLD UP TO 7 DAYS WITHOUT NITRIC ACID (HNO3)
   
HOLDING TIME FOR ALL EXCEPT MERCURY: 6 MONTHS
  FOR MERCURY: 28 DAYS
   
BOTTLE FOR 10 METALS AND LESS: 500 ML PLASTIC
  FOR OVER 10 METALS: 1-LITER PLASTIC
   
"M" METALS DRY WEIGHT METALS TESTING USUALLY DONE ON SLUDGE OR SOIL. SAMPLE MUST BE DRIED AT THE LAB IN AN OVEN. 250 ML PLASTIC BOTTLE OR BAG WITHOUT PRESERVATIVE.


Short Holding Times

DESCRIPTION HOLDING TIME
WASTEWATER, BACTERIOLOGICAL 6 HOURS
DRINKING WATER, BACTERIOLOGICAL 30 HOURS
COLOR 48 HOURS
SETTLEABLE MATTER 48 HOURS
TURBIDITY 48 HOURS
NITRITE 48 HOURS
NITRATE 48 HOURS
MBAS 48 HOURS
ORTHO-PHOSPHATE 48 HOURS