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.

VWR®, Sulphur, Certified Reference Materials, in odourless kerosene

Supplier: VWR Chemicals

Sulphur CRMs are suitable for calibration, verification or for use in quality control procedures used for analysing sulphur content in petroleum products.

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Standard solution, phosphate, 500 mg/L as PO4 (NIST), pk/16 - 10-mL voluette® ampules

Supplier: HACH

For accuracy checks in phosphate (phosphorus) determinations

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Potassium iodide-iodate standard solution, 0,0125 N

Supplier: HACH

Used for determination of sulphite by burette iodometric titration.

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VWR®, Diesel and lubricant, multi-parameter Certified Reference Materials (MPCRM)

Supplier: VWR Chemicals

MPCRM’s provide both calibration and verification options for laboratory test equipment, all from the same sample, with their values certified to the highest level of accreditation integrity available globally.

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Reagents for determination of ammonia and total kjeldahl nitrogen by the nessler method

Supplier: HACH

For determination of ammonia and total kjeldahl nitrogen by the nessler method. Solutions are available in self-contained dropping bottle.

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Nitrification inhibitor for BOD

Supplier: HACH

TCMP - 2-chloro-6 (trichloromethyl) pyridine (N-Serve), coated on an inert substrate.

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Rankem®, Secondary Reference Standards for GC

Supplier: RANKEM

Rankem offers a wide range of highly pure & characterised secondary GC reference standards for chromatographic and analytical applications.

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Solution, cobalt chloride, for spectrophotometer

Supplier: HACH

Cobalt chloride solution for spectrophotometer linearisation.

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Conductivity standards

Supplier: METTLER TOLEDO

A slight change in temperature usually has a big impact on the conductivity value of a standard solution. A table on every bottle label indicates the conductivity values at the most common measurement temperatures.
During calibration the meter automatically references to this table for temperature compensation. If possible, calibration and measurements should be performed at the same temperature

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VWR®, Conductivity standards, NaCl

Supplier: VWR Collection

NaCl standard solutions can be used to calibrate instruments that measure any samples containing NaCl (sodium chloride) as major component, such as seawater, brackish water, etc.

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VWR® Traceable® One-Shot™, Conductivity standards (CRM)

Supplier: VWR Collection

Traceable® Conductivity Standards are among the most accurate available. They are compatible with all makes of equipment, and can be used in lab or field. Each bottle is labeled for calibrating conductivity (microsiemens/micromhos), resistivity (ohms), and dissolved solids (parts per million).

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VWR®, Conductivity standards, KCl, referenced at 25 °C

Supplier: VWR Collection

Conductivity standard 100000 µS/cm (0,85 mol/L; KCl), VWR®, 100 000 µS/cm, Reference temperature: 25 °C

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ASTM® Colour Standards

Supplier: MILLIPORE

The fluid sampling kit is a complete solution for field-based fluid collection and contamination analysis. The stainless steel sampler assembly plugs into a quick-release valve installed in the system line, which allows a measured quantity of liquid to pass through the monitor. A valved syringe serves as a pump to remove residual liquid from the monitor. Kit is compatible with our 37 mm contamination monitors and matched-weight monitors.