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Meeting regulations in any industry, standards are essential for periodically checking the accuracy of equipment pieces. By comparing against the known values, output readings detect errors present and inform personnel adjustments are required. Once the settings of the manual or automatic instruments have returned to zero, the reestablished conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.

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Indium Standard for AAS, Certipur®, MilliporeSigma

Supplier: MilliporeSigma

Traceable to SRM from NIST.

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Tellurium Standard for ICP, Certipur®, MilliporeSigma

Supplier: MilliporeSigma

Traceable to SRM from NIST.

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Cadmium Standard for ICP, Certipur®, MilliporeSigma

Supplier: MilliporeSigma

Traceable to SRM from NIST.

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Selenium Standard for AAS, Certipur®, MilliporeSigma

Supplier: MilliporeSigma

Traceable to SRM from NIST.

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Aluminium Standard, Titrisol®, MilliporeSigma

Supplier: MilliporeSigma

1000 mg of aluminium (as AlCl₃ in H₂O) in a plastic ampule for dilution.

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LiChroTest® Caffeine Standard Solution for HPLC System Qualification Solution for Gradient Test; 20 mg/Lcaffeine in Water, MilliporeSigma

Supplier: MilliporeSigma

Cs4

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CombiCheck 80 for Checking the Quality of Photometric Methods for CSB, Nitrate and Phosphorus Spectroquant®

Supplier: MilliporeSigma

CombiCheck 80 for checking the quality of photometric methods for CSB, nitrate and phosphorus Spectroquant*

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Potassium Dichromate Standard Solutions in Sulfuric Acid (0.01N) Test Set for Calibrating the Absorbance of Spectrophotometers

Supplier: MilliporeSigma

Potassium Dichromate Standard Solutions in Sulfuric Acid (0.01N) Test Set For Calibrating the Absorbance of Spectrophotometers

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LiChroTest® Standard samples for HPLC system qualification Set 2: Precision; 100 mg/L Methyl paraben in methanol / water (50:50), MilliporeSigma

Supplier: MilliporeSigma

Lichrotest Standard Samples For HPLC System Qualification Set 2: Precision; 100 Mg/L Methyl Paraben in Methanol / Water (50:50)

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Ammonium Standard Solution, CRM traceable to SRM from NIST 6,00 mg/L NH₄-N in H₂O

Supplier: MilliporeSigma

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Ammonium Standard Solution, CRM traceable to SRM from NIST 2,00 mg/L NH₄-N in H₂O

Supplier: MilliporeSigma

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GF AAS Multi element standard XVIII (16 elements in diluted nitric acid), Certipur®, MilliporeSigma

Supplier: MilliporeSigma

Certipur* (16 elements in diluted nitric acid), Hazard May be corrosive to metal, May cause an allergic skin reaction, Causes severe skin burns and eye damage.

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Nitrogen (total) Standard Solution, CRM traceable to SRM from NIST 100 mg/L N in H₂O

Supplier: MilliporeSigma

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Certipur® Anion multi-element standard I

Supplier: MilliporeSigma

Certipur®, Supelco®

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Certipur® Anion multi-element standard II

Supplier: MilliporeSigma

Certipur®, Supelco®

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Nitrogen (total) Standard Solution, CRM traceable to SRM from NIST 12.0 mg/L N in H₂O

Supplier: MilliporeSigma

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PhotoCheck Check Solutions for Photometers (445/446 nm, 520/525 nm, and 690 nm) Spectroquant®

Supplier: MilliporeSigma

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Arsenic Standard for ICP, Certipur®, MilliporeSigma

Supplier: MilliporeSigma

Traceable to SRM from NIST.

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Supelco® Nitrogen (total) Standard Solution, CRM traceable to SRM from NIST 2.50 mg/L N in H₂O

Supplier: MilliporeSigma

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Reference Standard for chlorine, chlorine dioxide, ozone Spectroquant®

Supplier: MilliporeSigma

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Certipur® TOC standard solution acc. to EN 1484-H3/DIN 38409-H3 as potassium hydrogen phthalate in water, stabilized

Supplier: MilliporeSigma

Certipur grade, EN 1484-H3/DIN 38409-H3 as potassium hydrogen phthalate in water, stabilized 1000 mg/l.

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CombiCheck 50 for Checking the Quality of Photometric Methods for Ammonium, COD and Nitrogen Spectroquant®

Supplier: MilliporeSigma

CombiCheck 50 for checking the quality of photometric methods for ammonium, COD and nitrogen Spectroquant*

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CombiCheck 70 for Checking the Quality of Photometric Methods for Ammonium, COD and Nitrogen Spectroquant®

Supplier: MilliporeSigma

CombiCheck 70 for checking the quality of photometric methods for ammonium, COD and nitrogen Spectroquant*

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CombiCheck 10 for Checking the Quality of Photometric Methods for Ammonium, Chloride, CSB, Nitrate, Phosphorus and Sulfate Spectroquant®

Supplier: MilliporeSigma

CombiCheck 10 for checking the quality of photometric methods for ammonium, chloride, CSB, nitrate, phosphorus and sulfate Spectroquant*

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CombiCheck 20 for Checking the Quality of Photometric Methods for Ammonium, Chloride, CSB, Nitrate, Phosphorus and Sulfate Spectroquant®

Supplier: MilliporeSigma

CombiCheck 20 for checking the quality of photometric methods for ammonium, chloride, CSB, nitrate, phosphorus and sulfate Spectroquant*

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Certipur® Potassium Chloride Solution, Certified Reference Material for the Measurement of Electrolytic Conductivity, MilliporeSigma

Supplier: MilliporeSigma

Certipur grade, certified reference material for the measurement of electrolytic conductivity.

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Certipur® Potassium Chloride Solutions, in Sachets, Certified Reference Material for the Measurement of Electrolytic Conductivity, Traceable to PTB and NIST, MilliporeSigma

Supplier: MilliporeSigma

Certipur grade, certified reference material for the measurement of electrolytic conductivity, traceable to PTB and NIST.

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Potassium Chloride Solution (Nominal 0.015 mS/cm) Certified Reference Material for the Measurement of electrolytic Conductivity, traceable to PTB and NIST (c=0.0001 mol/L), MilliporeSigma

Supplier: MilliporeSigma

Potassium chloride solution (nominal 0.015 mS/cm) certified reference material for the measurement of electrolytic conductivity, traceable to PTB and NIST (c=0.0001 mol/l) Certipur*