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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 re-established conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.
62,4 mg/ml CuSO₄.5H₂O
Supplier: CPACHEM
The colour standard is specially intended for use in testing ChP and monographs. This solution was produced according to the specifications using ChP reagent quality components and water meeting the ChP monograph requirement for purified water.
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Hard Drinking Water UK Low Level Metals
Supplier: LGC Standards PROMOCHEM
Hard drinking water UK low level metals, : N/A
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Combined density and refractometry standards
Supplier: Mettler - Toledo
These combined reference standards are intended to reduce uncertainty, eliminate time-consuming and error prone sample transfer and facilitate fully automatic performance verification.
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Potassium standard solution, NIST-3141A
Supplier: LGC Standards PROMOCHEM
This reference standard is intended for use as a primary calibration standard for the quantitative determination of potassium.
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Reference materials, diesel fuel dilution Standards, VHG
Supplier: LGC Standards PROMOCHEM
These standards are intended for use in the determination of fuel (diesel fuel or gasoline) in used engine oils by GC, IR, fuel dilution meter (fuel sniffer), or flash point analyser. They are prepared gravimetrically from well-characterised fuels and hydrocarbon oils, and are verified by GC-FID in accordance with ASTM Method D3524 or D3525.
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Reference standards, soil, BTEX - Loamy Sand 1, CRM
Supplier: LGC Standards PROMOCHEM
BTEX - Loamy Sand 1, (5 analytes), : N/A
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DNPH reference materials
Supplier: Restek
The reported concentrations reflect the amount of aldehyde or ketone in the mixture.The concentration of derivatised aldehyde or ketone is not reported.
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Calibration standard, NexION KED setup solution
Supplier: PerkinElmer
Standard multi-éléments, NexION KED setup solution in 1% HNO3, 10 mg/L, Contenu: Be, Ce, Fe, In, Li, Mg, Pb, U
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Elemental analysis standards for particle count analysis, VHG
Supplier: LGC Standards PROMOCHEM
PTP sample for particle count analysis, VHG, 125 ml, VHG
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Elemental analysis standards, total kjeldahl nitrogen (TKN) standards, VHG
Supplier: LGC Standards PROMOCHEM
This standard solution is intended for use as a calibration standard for total Kjeldahl nitrogen (TKN). It is prepared gravimetrically to contain nominally 1000 mg of total Kjeldahl nitrogen per liter of solution using analytical grade raw materials and 18 megohm deionised water. The certified concentration is the mean of replicate measurements. The uncertainty is calculated as ±2s/√n.
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Unleaded gasoline composite standards for UST monitoring
Supplier: Restek
Unleaded gasoline composite standards are comprised of three separate sources each of 87, 89, and 93 octanes blended in equal portions.
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Total Acid Number (TAN) Standards
Supplier: CUSTOM MADE CHEMICALS LAB
Total acid number TAN 17034, 2 mg KOH/g
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Iron Standard Stock Solution
Supplier: CPACHEM
Standard de fer, Iron standard stock solution
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EBC Standard Colour Number (EBC) 5
Supplier: Bernd Kraft
EBC standard color number (EBC) 5 for determining the color strength of beer and beer wort
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Calibration reference materials, alloys
Supplier: PerkinElmer
Perkalloy, three 50,8 mm pieces (596 °C)
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Glass - trace elements, NIST standards
Supplier: LGC Standards PROMOCHEM
This standard reference material is intended to facilitate the development of chemical methods of analysis for trace elements.
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Standards for water pollution QC check, oil and grease concentrate, VHG
Supplier: LGC Standards PROMOCHEM
This material is designed for use as a quality control check for EPA method 1664. This standard is prepared in solvent n-propanol but not preserved.
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Standards for water pollution QC check, hexavalent chromium, VHG
Supplier: LGC Standards PROMOCHEM
This solution is intended for use as a quality control check for methods related to hexavalent chromium.
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Petroleum standards, heavy mineral oils, CRM
Supplier: LGC Standards PROMOCHEM
This matrix material solution is intended for use as a diluent for other metallo-organic standards.
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Estuarine sediment standard - metals, NIST-1646A
Supplier: LGC Standards PROMOCHEM
NIST-1646A, estuarine sediment - metals, : N/A
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Elemental analysis standards, phosphate rock, western, NIST-694
Supplier: LGC Standards PROMOCHEM
This standard material is intended to use in validating analytical methods and in calibrating instruments used in the analysis of phosphate rock, fertilisers and similar materials.
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Standards for water pollution QC check, total phenolics, VHG
Supplier: LGC Standards PROMOCHEM
This solution is intended for use as a quality control check for methods related to total phenolics.
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Diesel range organic standard (EPA/WISC)
Supplier: Restek
DRO mix (EPA/wisconsin) with 10 components, includes n-decane (C10), n-eicosane (C20), n-dodecane (C12), n-docosane (C22), n-tetradecane (C14), n-tetracosane (C24), n-hexadecane (C16), n-hexacosane (C26), n-octadecane (C18), n-octacosane (C28), with 2000 μg/ml each in methylene chloride in 1 ml/ampule
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Gasoline component standard, 10 components
Supplier: Restek
Certified reference materials (CRMs) manufactured and QC-tested in ISO-accredited labs satisfy your ISO requirements.
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EPA Method 525.3 OCP Cal Standard, 500 µg/ml, Acetone, 1 ml/Ampul
Supplier: Restek
Developed specifically for EPA Method 525.3.
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Gasoline fuel dilution standards, VHG
Supplier: LGC Standards PROMOCHEM
This standard is intended for use in the determination of gasoline in used gasoline engine oil by gas chromatography (GC), IR, fuel dilution meter (fuel sniffer) and flash point analyser.
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Chemical Oxygen Demand COD 50 mg/L Calibration Standard
Supplier: CUSTOM MADE CHEMICALS LAB
Chemical oxygen demand COD 50 mg/L calibration standard, : N/A, Calibration standard
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Metal alloy standards, gray cast iron, CRM
Supplier: LGC Standards PROMOCHEM
Grey cast iron (carbon + sulfur), NIST-334
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Silicon standard solution
Supplier: Bernd Kraft
Sodium silicate in water can be used for determination of silicic acid in demineralised water.
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Low alloy steel standard
Supplier: LGC Standards PROMOCHEM
This reference material is intended for use in the evaluation of chemical and instrumental analysis and in calibration of those methods.