1 of 8 Note 1: Consumer collected samples may be left unpreserved for up to. Note 2: ELAP offers Nitrate or Nitrite only for accreditation. ELAP does not offer combined Nitrate-Nitrite. The preservation and holding time requirements for combined Nitrate- Nitrite is Cool to 4 C, H 2 SO 4 to, and 28 days. Inorganic Tests: Alkalinity P,G Separate bottle completely filled to the exclusion of air. Antimony P,G HNO 3 to Arsenic P,G HNO 3 to Barium P,G HNO 3 to Beryllium P,G HNO 3 to Inorganic Tests: Bromate P,G 50 mg IL EDA 28 days Cadmium P,G HNO 3 to Calcium P,G HNO 3 to Chloride P,G None 28 days Chlorine Residual P,G None immediately Chlorite P,G 50 mg IL EDA, Chromium P,G HNO 3 to Color P,G 48 hours Conductivity P,G 28 days Copper P,G HNO 3 to Note 1 Cyanide P,G, NaOH to ph<12, 1.2 g/l
2 of 8 ascorbic acid Fluoride P,G None 28 days Lead P,G HNO 3 to Note 1 Mercury P,G HNO 3 to 28 days Nickel P,G HNO 3 to Nitrate Note 2 P,G 48 hours Chlorinated Samples only P,G Nitrite P,G 48 hours ph P,G None immediately Phosphorus (as Orthophosphate) P,G 48 hours Selenium P,G HNO 3 to Silica P 28 days Silver P,G HNO 3 to Sodium P,G HNO 3 to Sulfate P,G 28 days Thallium P,G HNO 3 to Total Filterable Residue P,G 7 days Turbidity P,G 48 hours UV 254 Absorbance P,G 48 hours Organic Tests: Trihalomethanes Bromodichloromethane Bromoform Chlorodibromomethane Chloroform Teflon-lined Septum 0.008% Na 2 S 2 O 3,
3 of 8 Volatile Halocarbon and Volatile Aromatics: Methy-tert-butyl ether Teflon-lined Septum Ascorbic Acid (25 mg/40 ml) added to empty sample bottle then add 1:1 HCl to. Microextractables: Method 504.1 Teflon-lined Septum, 3 mg Na 2 S 2 O 3 per 40 ml vial Method 505 analytes Alachlor Aldrin Atrazine Chlordane Dieldrin Heptachlor Heptachlor epoxide Hexachlorobenzene Hexachlorocyclopentadiene Lindane Methoxychlor Metolachlor Metribuzin PCB s Simazine Toxaphene 40-ml glass vial with liner 3 mg Na 2 S 2 O 3, 7 days Method 506 analytes Di-(2-ethylhexyl)adipate Di-(2-ethylhexyl) phthalate 1-L (or qt.) amber glass 60 mg Na 2 S 2 O 3,, until, then after Method 507 analytes Alachlor Atrazine Butachlor Chlordane Metolachlor Metribuzine Propachlor Simazine 1-L Borosilicate glass, graduated, 80 mg Na 2 S 2 O 3,, Protect after until, then
4 of 8 Method 508 analytes Aldrin Chlordane Dieldrin Endrin Heptachlor Heptachlor epoxide Hexachlorobenzene Hexachlorocyclopentadiene Lindane Methoxychlor Metribuzin PCB s Toxaphene Method 508A PCB s, Total as decachlorobiphenyl 1-L Borosilicate glass, graduated, 1-L glass, with TFE lined 80 mg Na 2 S 2 O 3,, Protect 7 days until, then after until, then 30 days after Method 508.1 All 1-L glass with TFE lined 50 mg Na 2 S 2 O 3 then 1:1 HCl to, until then 30 days after Method 1613 2,3,7,8-TCDD 1-L amber glass with TFE lined 80 mg Na 2 S 2 O 3,, Protect ph 7-9 one year until, then one year after Method 515.1: 515.2, 515.3 Chlorinated Acids 1-L Borosilicate glass, graduated, 80 mg Na 2 S 2 O 3, Protect until, then after Method 524.3 40-ml VOA vial See section 8.1 and 8.4 of method. Analyze within of collection Method 525.2 Refrigerated glass sample Cool, 4 C, Remove Cl residual; adjust Extract within.
5 of 8 Alachlor Aldrin Atrazine Benzo(a)pyrene Butachlor Chlordane (Technical) Dieldrin Di(2ethylhexyl)adipate Di(2-ethylhexyl) phthalate Endrin Heptachlor Heptachlor Epoxide Hexachlorobenzene Hexachlorocyclopentadiene Lindane Methoxychlor Metolachlor Metribuzin Pentachlorophenol Propachlor Simazine Toxaphene Method 531.1 Methylcarbamate pesticides containers - Sampling must be free of plastic tubing, gaskets, etc. that may leach analytes into water. 60-ml vial with PTFE silicone faced septa with6 N HCl 1.8 ml acetic acid buffer, 4.8 mg Na 2 S 2 O 3, ph=3±0.2 for 4 analytes, Ship at 4 o C, Store at - 10 o C Analyze within 30 days of sample 28 days Method 531.2 Methylcarbamate pesticides 60-ml vial with PTFE silicone faced septa Use Na 2 S 2 O 3 & C 6 H 7 KO 7 to ph~3.8 for 4 analytes, Ship at 10 o C, Store in dark at 6 o C 28 days Glyphosate 60-ml vial PTFE faced Silicone 6 mg Na 2 S 2 O 3,, Protect Endothall 40-ml amber glass vial with TFE lined, Protect 7 days
6 of 8 Diquat 1-L amber plastic or silanized glass with screw 100 mg Na 2 S 2 O 3 H 2 SO 4 to ph=2,, Protect 7 days until, then 21 days after Benzo(a)pyrene 1-L (or qt.) amber glass 100 mg Na 2 S 2 O 3, 1:1 HCl to, ; Protect 7 days until then 30 (40 for Method550.1) days after Method 551.1 Alachlor Atrazine Bromochloromethane Bromodichloromethane Bromoform Carbon Tetrachloride Chloroform Dibromochloromethane 1,2-Dibromo-3- chloropropane [DBCP] 1,2 Dibromoethane [EDB] Endrin Heptachlor Heptachlor epoxide Hexachlorobenzene Hexachlorocyclopentadiene Lindane Methoxychlor Metalochlor Metribuzin Simazine Tetrachloroethylene 1,1,1-Trichloroethane 1,1,2-Trichloroethane Trichloroethylene 60 ml glass vials with Teflon lined Septum Sodium Sulfite or Ammonium Chloride (for microextractables), ph 4.5-5.5 with phosphate buffer, until, then after Method 552.1 Dalapon Amber glass with TFE liner Add NH 4 Cl to a concentration of Extract within 28 days of
7 of 8 Monochloroacetic acid Dichloroacetic acid Trichloroacetic acid Monobromoacetic acid Dibromoacetic acid Bromochloroacetic Acid Method 552.2 Dalapon Monochloroacetic acid Dichloroacetic acid Trichloroacetic acid Monobromoacetic acid Dibromoacetic acid Bromochloroacetic Acid Amber glass with TFE liner 100 mg/l in sample, Add NH 4 Cl to a concentration of 100 mg/l in sample, collection. Analyze extract within 48 hours if stored at 4 o C or less. Extract within of collection. Analyze extract within 7 days if stored dark at 4 o C or less or if - 10 o C or less. See section 8.3 of method. Method 552.3 Dalapon Monochloroacetic acid Dichloroacetic acid Trichloroacetic acid Monobromoacetic acid Dibromoacetic acid Bromochloroacetic Acid Amber glass with TFE liner Add NH 4 Cl to a concentration of 100 mg/l in sample,. Extracts stored at -10 o C. Extract within. See section 8.4 of method. Method 555 2,4-D Dicamba Pichloram 2,4,5-TP TFE liner Acidify to ph2 with 1:1 HCl, Dechlorinate with 5 mg NaSO 3 per 100mL sample,, Protect Analyze after, within of collection Microscopical Tests: Asbestos P,G 48 hours
8 of 8 Asbestos P,G Preserved with 10 gm/l of O 3, and UV treatment Instructions for containers, preservation procedures and holding times as specified in Method 100.2 must be adhered to for all compliance analyses including those conducted with Method 100.1. Radiological Tests: Gross Alpha P,G HCl or HNO 3 to Gross Beta P,G HCl or HNO 3 to Strontium-89 P,G HCl or HNO 3 to Strontium-90 P,G HCl or HNO 3 to Radium-226 P,G HCl or HNO 3 to Radium-228 P,G HCl or HNO 3 to Radon-222 teflon-lined septum (1yr for composites) (1yr for composites) (1yr for composites) 4 days Radioactive Cesium P,G HCl to Iodine-131 P,G None 7 days Tritium G None Uranium P,G HCl or HNO 3 (1yr for composites) Photon Emitters P,G HCl or HNO 3