Standards N

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 5.0 mL sample for dilution to 1000 mL. Can be used for IR methods as well as Gravimetric methods. Formulated in the NELAC range of 20 - 200 mg/L. Each ampule produces 1 liters of sample. (Supplied in duplicate)

A 21 mL concentrate for determination of Silica. Formulated in the NELAC range of 50 - 250 mg/L. Each vial produces 2 liters of sample. (Supplied in duplicate)

A 21 mL concentrate to be analyzed for Simple Nutrients. Each ampule produces 2 liters of sample. (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 1.5 mL concentrate in Methanol for determination of Supplemental Volatiles. (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 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 5.5 mL concentrate in Methanol for determination of TOX. Formulated in the range of 300 - 1500 ug/L. Each ampule produces 3 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)

Sample contains both organic and inorganic mercury in the range of 20 -100 ng/L. Provided as a 5 mL concentrate for dilution to 1000 mL. (Supplied in duplicate)

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