"Certipur"

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Certipur® ICP Multi Element Standard Solution IV

Supplier: Merck

Multi-Element Standard, ICP multi-element standard solution IV 23 elements, Certipur®, Matrice: Nitric acid dil., Ansøgning: ICP standards

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Brix sugar standards for refractometers, Certipur®, Supelco®

Supplier: Merck

Refractive index standards traceable to SRM from NIST and PTB.

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Atomic absorption Spectrocopy (AAS) standards, multi-element in oil, Certipur®, Supelco®

Supplier: Merck

Standards dissolved in oil are ready-to-use calibration standards for the analysis of non-aqueous matrices.

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Certipur® Ammonium Standard Solution, CRM traceable to SRM from NIST NH₄Cl in H₂O 1000 mg/L NH₄

Supplier: Merck

Certipur® Ammonium Standard Solution, CRM traceable to SRM from NIST NH₄Cl in H₂O 1000 mg/L NH₄

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Ion chromatography Multi-Element standards, Supelco®

Supplier: Merck

All ion chromatography standards are traceable to NIST standard reference materials.

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Refraktionsindeksstandarder i henhold til Ph. Eur., Supelco®

Supplier: Merck

Adskillige referencematerialer til brug ved instrumenttest beskrives i European pharmacopoeias (dvs. Ph Eur. 2.2.6). I dette tilfælde anbefales stofferne trimethylpentan, toluen og methylnaphthalen. Denne instrumenttest skal udføres før hver analyse. Det omfattende produktsortiment indeholder velegnede standarder til stort set alle driftsområder; intervallet dækker 1,3915-1,6160 (20 °C).

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Standardopløsninger til Analytical Quality Assurance, Supelco®

Supplier: Merck

De standardopløsninger, der tilbydes nedenfor, kan fortyndes til den endelige koncentration, der passer til analysesystemets måleområde. Herudover kan disse standarder anvendes til at klargøre spike-opløsninger til standard additionsprocedure. De udgør en økonomisk og enkel metode til analytisk kvalitetskontrol.

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natrium standard, 1g/L (from NaNO₃) Certipur® standard til AAS, Supelco®

Supplier: Thermo Fisher Scientific

Niobium Standard, 1000 mg/L, Specpure®, Niob, Matrice: 2% HF, Ansøgning: AAS standards

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Chlorid 1.000 mg/l i vand enkeltelement standard til ionkromatografi

Supplier: CPACHEM

Chlorid, 1000 mg/l, Matrice: H₂O, Ansøgning: Ionkromatografistandarder

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UV/Visible standards, Supelco®

Supplier: Merck

For spectrophotometer calibration according to Ph. Eur.

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Reference Standard, Potassium Tetraoxalate Dihydrate

Supplier: CPACHEM

Potassium tetraoxalate dihydrate [pH (S) = 1,67₉ (25 °C)] is a certified secondary standard reference material used as a calibration buffer standard for pH instruments or pH electrodes.