Standards

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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Supelco® Pharmaceutical Secondary Standard, 6-epi-Doxycycline HCl, CRM

Supplier: Merck

Supelco® Pharmaceutical Secondary Standard, 6-epi-Doxycycline HCl, CRM

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Supelco® Pharmaceutical Secondary Standard, 2,2′-Bisnaloxone, CRM

Supplier: Merck

Supelco® Pharmaceutical Secondary Standard, 2,2′-Bisnaloxone, CRM

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Supelco® TraceCERT® 1-Naphthol, Certified Reference Material

Supplier: Merck

Supelco® TraceCERT® 1-Naphthol, Certified Reference Material

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Organic Reference Standard, Bromomethane Solution 200 μg/ml in Methanol

Supplier: Merck

Bromomethane is a broad spectrum fumigant, which can find applications in post-harvest fumigation and pest control of several foods like spices, cereals, nuts, dried fruits, fresh fruits, vegetables, turf and also nursery crops.

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Colour reference solutions, ready to use, according to Ph. Eur., Certipur®, Supelco®

Supplier: Merck

Certipur® colour reference solutions are developed for ‘Method 1’ as described in chapter 2.2.2 of the European Pharmacopoeia.

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Conductivity standards, Certipur® Supelco®

Supplier: Merck

These conductivity sachets are convenient, easy to use and ensure accurate and reliable results both in the field or in the laboratory. The 30 ml sachets always provide a fresh solution preventing contamination by microorganisms, CO₂ or other substances. A conductivity sensor can be simply inserted into the sachet.

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Secondary reference material for redox titration, iron(II) ethylenediammonium sulphate, Certipur®, Supelco®

Supplier: Merck

Iron(II) ethylenediammonium sulfate CertiPUR®, secondary reference material for redox titration, Glass bottle

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Water standards for Karl Fischer titration, Aquastar®, Supelco®

Supplier: Merck

Aquastar® standards for Karl Fischer titration can be used for monitoring and qualification of your Karl Fischer instruments, for checking and evaluating measuring results, and for performing titer determination of volumetric Karl Fischer reagents.

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Standards for spectrophotometer calibration, test set, Supelco®

Supplier: Merck

Standard solutions are particularly used for calibrating the absorbance of spectrophotometers.

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Standards for spectrophotometer calibration, Supelco®

Supplier: Merck

Standard solutions are used for the calibration of spectrophotometers.

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UV/Visible standards, Supelco®

Supplier: Merck

For spectrophotometer calibration according to Ph. Eur.

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Standard solutions for analytical quality assurance, Supelco®

Supplier: Merck

The standard solutions offered below can be adjusted to a final concentration for the measurement range of a test system by dilution. In addition, these standards can be used to prepare spiking solutions for the standard addition procedure. They provide an economic and simple method of analytical quality control.

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ICP multi-element standards, CertiPUR®, Supelco®

Supplier: Merck

Safety note: These solutions are generally in acid solution.

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Reference substances for GC analysis, Supelco®

Supplier: Merck

Reference substances can be used for the identification of unknown compounds in a gas chromatogram or as standards in quantitative GC analysis. They serve also for the characterisation of GC column properties.