Inorganics

Inorganics
Parameter	EPA Method	Container	Recommended Quantity	Preservative	Holding Time
Acidity	305.1	Plastic, Glass	100 ML	4⁰C	14 Days
Alkalinity	310.1	Plastic, Glass	100 ML	4⁰C	14 Days
Ammonia	350.3	Plastic, Glass	500 ML	4⁰C, H₂SO₄ to pH<2	28 Days
Biochemical Oxygen Demand	405.1	Plastic, Glass	500ML	4⁰C	48 Hours
Bromide	320.1	Plastic, Glass	200ML	None	28 Days
Chemical Oxygen Demand	410.4/9056/9211	Plastic, Glass	100ML	4⁰C, H₂SO₄ to pH<2	28 Days
Chloride	325.3	Plastic, Glass	200ML	None	28 Days
Residual Chlorine	330.1	Plastic, Glass	200ML	None	Immediate
Chromium VI	7196	Plastic, Glass	250ML	4⁰C	24 Hours
Color	110.1	Plastic, Glass	100ML	4⁰C	48 Hours
Cyanide	9010B/335.2	Plastic, Glass	1000ML	4⁰C, Ascorbic Acid, NaOH to pH>12	14 Days
Fluoride	340.1	Plastic, Glass	500ML	None	28 Days
Hardness	130.1	Plastic, Glass	100ML	None	6 Months
Metals	6010B/200.7/7000 Series	Plastic, Glass	500ML	HON₃ pH<2	6 Months
Mercury	7470A/7471A	Plastic, Glass	500ML	HON₃ pH<2	28 Days
Nitrogen (TKN)	351.3	Plastic, Glass	500ML	4⁰C, H₂SO₄ to pH<2	28 Days
Nitrate as N	353.2	Plastic, Glass	100ML	4⁰C	48 Hours
Nitrite as N	354.1	Plastic, Glass	100ML	4⁰C	48 Hours
Nitrate-Nitrite	353.3	Plastic, Glass	200ML	4⁰C, H₂SO₄ to pH<2	28 Days
Oil and Grease	413.1/413.2/SM5520	Glass	1000ML	4⁰C, H₂SO₄ to pH<2	28 Days
Phenols	420.1	Glass	1000ML	4⁰C, H₂SO₄ to pH<2	28 Days
Phosphate - Ortho	365.1	Plastic, Glass	200ML	4⁰C	48 Hours
Phosphorus-Total	6010B/200.7	Plastic, Glass	200ML	4⁰C, H₂SO₄ to pH<2	28 Days
pH	150.1/9045C	Plastic, Glass	100ML	NONE	24 Hours
Silica	6010B/200.7	Plastic	100ML	HNO₃ pH<2	28 Days
Total Dissolved Solids	160.1	Plastic, Glass	100ML	4⁰C	7 Days
Total suspended Solids	160.2	Plastic, Glass	100ML	4⁰C	7 Days
Settable solids	160.5	Plastic, Glass	1000ML	4⁰C	7 Days
Specific Conductance	120.1	Plastic, Glass	100ML	4⁰C	Immediate
Sulfate	375.3	Plastic, Glass	200ML	4⁰C	28 Days
Sulfide	376.2	Plastic, Glass	500ML	4⁰C, ZnAcetate, NaOH to pH>12	7 Days
Sulfite	377.1	Plastic, Glass	200ML	None	Immediate
Surfactants (MBAS)	425.1	Plastic, Glass	250ML	4⁰C	48 Hours
Total Organic Carbon (TOC)	415.1/9060	Plastic, Glass	100ML	4⁰C, HCL/H₂SO₄	28 Days
Total Organic Halides (TOX)	9020	Glass Teflon Lined Cap, Amber Acidification	100ML	4⁰C, H₂SO₄ to pH<2	28 Days
Total Recoverable Petroleum Hydrocarbons (TRPH)	418.1	Glass, Teflon Lined Cap	1000ML	4⁰C, H₂SO₄ to pH<2	28 Days
		Plastic, Glass		4⁰C	48 Days

Organics
Parameter	EPA Method	Container	Recommended Quantity	Preservative	Holding Time
Purgeable Hydrocarbons	601/8021B	Glass, Teflon Lined Septum	2X40ML	4⁰C, HCL, pH<2	14 Days
Purgeable Aromatics	602/8021B	Glass, Teflon Lined Septum	2X40ML	4⁰C, HCL, pH<2	14 Days
Organochlorine Pesticide & PCBS	608/8081&8082	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C, pH 5~8	7/40 Days
Organophos-phorus Pesticide	614/8141A	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C	7/40 Days
Chlorinated Herbicides	615/8151A	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C	7/40 Days
BNA	625/8270C	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C	7/40 Days
Dioxins and Furans	1613	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C	30/45 Days
Gasoline	8015M	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C, HCL, pH<2	14 Days
Diesel	8015M	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C, H₂SO₄, pH<2	7 Days
Carbon Chain	8015M	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C, H₂SO₄, pH<2	7 Days
BTEX/MTBE	8021B	Glass Teflon Lined Cap, Amber Acidification	2X40ML	4⁰C, HCL, pH<2	14 Days
Semivolatile Organics	625/8270C	Glass Teflon Lined Cap, Amber Acidification	1000ML	4⁰C	7/40 Days
Volatile Organics	524.2/624/8260B/8010	Glass, Teflon Lined Cap	2X40ML	4⁰C, HCL	14 Days