A 21 mL concentrate for determination of Nitrite. Formulated in the NELAC range of 0.4 - 4.0 mg/L. Each ampule produces 2 liters of sample. (Supplied in duplicate)

A 1 gram lyophilized sludge sample containing fecal coliforms from 10E3 mpn/g to 10E6 mpn/g. Designed for use with EPA 1680/1681. Supplied in duplicate so that you can evaluate two analysts or two methods without purchasing additional sample.

A 1.5 mL concentrate in Methanol for determination of GRO. Formulated in the NELAC range of 400 - 4000 ug/L. (Supplied in duplicate)

A 21 mL concentrate for determination of Bromide. Formulated in the NELAC range of 1.0 - 10 mg/L. Each ampule produces 2 liters of sample. (Supplied in duplicate)

A 2 x 21 mL vial set for analysis of elements. Each ampule produces 2 liters of sample. (Supplied in duplicate)

A 10 gram sample supplied ready to use. Supplied in duplicate.

A 5.0 mL concentrate for determination of Total Phenolics.  Formulated in the NELAC range of 0.5 - 5 mg/L. Each ampule produces 5 liters of sample.  (Supplied in duplicate) 

A 1.5 mL concentrate in Acetone for use with Methods 604/8040/8041 or 625/8270. Supplied in duplicate to provide adequate sample for multiple methods requirements or for multiple analysts.

A 1.5 mL concentrate in Methanol for determination of Supplemental Volatiles. (Supplied in duplicate)

A 110 mL sample for Ignitability in the range of 100 - 200°F. Ground Shipping Only. Not supplied in duplicate.

A 10.5 mL concentrate for determination of Sulfide. Formulated in the NELAC range of 2.0 - 10 mg/L. Each ampule produces 2 liters of sample. (Supplied in duplicate)

A 2.2 mL concentrate for determination of Total Residual Chlorine.  Formulated in the NELAC range of 0.5 - 3.0 mg/L. Each ampule produces 2 liters of sample. (Supplied in duplicate). 

A 1.5 mL concentrate in MTBE for determination of Dicamba, 2,4-D, 2,4,5-T, Silvex, 2,4-DB, Dalapon, Dichloroprop, Dinoseb, MCPA, MCPP and Pentachlorophenol. Formulated in the NELAC range of 2.00 - 10.0 ug/L. (Supplied in duplicate)

A natural solid for quantitative transfer to a 1 liter Class A volumetric flask with dilution to 1 liter in reagent water. Formulated in the NELAC range of 5.0 - 50 mL/L. Each vial produces 1 liter of sample. (Supplied in duplicate) 

A 250 mL whole volume sample to be analyzed for pH without dilution. Formulated in the NELAC range of 5.0 - 10 units. (Supplied in duplicate)

A 500 mL ready-to-use whole volume sample to be analyzed for Total Suspended Solids in the NELAC range of 20-100 mg/L and Total Solids formulated in the NELAC range of 140-800 mg/L. (Supplied in duplicate)

A 21 mL concentrate to be analyzed for Complex Nutrients. Each ampule produces 2 liters of sample. The sample includes:  (Supplied in duplicate)

A 10.5 mL concentrate for determination of Hexavalent Chromium. Formulated in the NELAC range of 90 - 900 ug/L. Each ampule produces 2 liters of sample. (Supplied in duplicate)

A 1.5 mL concentrate in P/T Methanol for determination of 1,2-Dibromoethane (EDB), 1,2-Dibromo-3-chloropropane (DBCP) and 1,2,3-Trichloropropane. Formulated in the NELAC range of 0.2 - 2.0 ug/L. (Supplied in duplicate)

A 21 mL concentrate to be analyzed for Simple Nutrients. Each ampule produces 2 liters of sample. (Supplied in duplicate)

A 21 mL concentrate for determination of Mercury. Formulated in the NELAC range of 3.0 - 30 ug/L. Each ampule produces 2 liters of sample. (Supplied in duplicate) 

A 1.5 mL concentrate in Acetone for determination of Toxaphene. Formulated in the NELAC range of 20 - 100 ug/L. (Supplied in duplicate)

A screw-cap vial containing a solid material for dilution to 1000 mL. Formulated in the NELAC range of 100 - 500 mg/L. Each vial produces at least 1 liter of sample. (Supplied in duplicate)

A 3.2 mL concentrate for determination of Oil and Grease. Formulated in the NELAC range of 20 - 200 mg/L. Each ampule produces 3 liters of sample. (Supplied in duplicate)

One stabilized pellet containing a heterotrophic bacteria in the range of 5 - 500 MPN per mL. Sterile hydration buffer included. Store in freezer. Supplied in duplicate so that you can evaluate 2 analysts or 2 methods without having to purchase additio

1000ppm Nitrite as N in reagent water. Nitrite as N source is high purity sodium nitrite. Stores refrigerated. Packaged in 500mL HDPE bottle. A NSIT Traceable, ISO34 Certified Reference Material.