Quality Control and Proficiency Samples
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201
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61
ERA WATERS CORP COLOR CERT REFERENCE
Color, WasteWatR One 125 mL whole-volume bottle is ready to analyze.
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SPEX CERTIPREP LLC 3P Nitrite N QC Concentrate 21 mL
NSI Lab Solutions QCI-140 Nitrite-N QC Concentrate, 21mL Single
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ERA WATERS CORP HEXAVALENT CHROMIUM PT SAMPLE
One 15 mL screw-cap vial yields up to 2 liters after dilution. Use with IC or colorimetric methods.
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ERA WATERS CORP HALOACETIC ACID
One 2 mL flame-sealed ampule yields up to 2 liters after dilution. Includes all the analytes below at 5-50 ug/L.
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SPEX CERTIPREP LLC 3P INORGANIC QC SAMPLE 500ML
(NSI by Zeptometrix) Drinking Water Inorganics Sample, 500 mL
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Cambridge Isotope Laboratories EPA Method 543 Internal Standard Stock Solutions Kit 1 kit
EPA Method 543 Internal Standard Stock Solutions Kit 1 kit
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ERA WATERS CORP pH, WasteWatR™, 250mL
One 250 mL whole-volume bottle is ready to analyze. Use with electrometric methods.
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Hach Company Quaternary Ammonium Compound (QAC) Standard Solution, 100 mg/L, 100 mL
For accuracy checks in Quaternary Ammonium Compound (QAC) determinations. 100 mg/L as CTAB.