You searched for: 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.
Organochlorine pesticides ampule 2 - WS, proficiency testing material, Supelco®
Supplier: Merck
Organochlorine Pesticides Ampule 2 - WS, Supelco®, Proficiency Testing Material, : N/A
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Sulfuric acid in impinger solution, proficiency testing material, Supelco®
Supplier: Merck
Sulfuric Acid in Impinger Solution, Supelco®, Proficiency Testing Material, : N/A
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Residual Solvents Class 1 PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Residual Solvents Class 1 PT, Proficiency Testing Material
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Dissolved Oxygen - WP, (CRM), Supelco®
Supplier: Merck
Dissolved Oxygen - WP, Supelco®, Certified reference material, : N/A
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Total Cyanide-WP, (CRM), Supelco®
Supplier: Merck
Total Cyanide-WP, Supelco®, Certified reference material, : N/A
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Anionic Surfactant - WP, (CRM), Supelco®
Supplier: Merck
Anionic Surfactant - WP, Supelco®, Certified reference material, : N/A
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Total Residual Chlorine-WP, (CRM), Supelco®
Supplier: Merck
Total Residual Chlorine-WP, Supelco®, : N/A, Matrix: H₂O
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TPH in Soil - PT, Proficiency Testing Material, Supelco®
Supplier: Merck
TPH in Soil - PT, Supelco®, Proficiency Testing Material, : N/A
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Bromate and bromide - WS, proficiency testing material, Supelco®
Supplier: Merck
Bromate and Bromide - WS, Supelco®, Proficiency Testing Material, : N/A
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UV 254 - WS, proficiency testing material, Supelco®
Supplier: Merck
UV 254 - WS, Supelco®, Proficiency Testing Material, : N/A
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Corrosivity/Sodium - WS, proficiency testing material, (CRM), Supelco®
Supplier: Merck
Corrosivity/Sodium - WS, Supelco®, Proficiency Testing Material, : N/A
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EPA TCL PAH Mix, certified reference material, Supelco®
Supplier: Merck
EPA TCL PAH Mix, Supelco®, Certified reference material, in acetonitrile: methanol (9:1) (varied), : N/A
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Trace metals - fly ash, (CRM), Supelco®
Supplier: Merck
Trace Metals - Fly Ash 3, Supelco®, Certified reference material, : N/A, Pkg of 50 g
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Trace metals - paint chips, (CRM), Supelco®
Supplier: Merck
Trace Metals - Paint Chips, Supelco®, Certified reference material, : N/A, Pkg of 50 g
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TCLP Metals - Sandy Loams, (CRM), Supelco®
Supplier: Merck
TCLP Metals - Sandy Loam 1, Supelco®, Certified reference material, : N/A, Pkg of 225 g
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n-Paraffin Mix C24, C28, C32, C36, certified reference material, Supelco®
Supplier: Merck
n-Paraffin Mix C24, C28, C32, C36, Supelco®, 2 % (w/w) each component in octane
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Supelco® Trace Metals - Fresh Water Sediments (CRM)
Supplier: Merck
Trace metals - fresh water sediment 3, Supelco®, Certified reference material, : N/A, Pkg of 50 g
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Complex Nutrients in Seawater - Whole Volume - WP, Proficiency Testing Material, Supelco®
Supplier: Merck
Complex Nutrients in Seawater - Whole Volume - WP, Supelco®, Proficiency Testing Material, : N/A
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EPA 8100 PAH additional components mix, certified reference material, Supelco®
Supplier: Merck
EPA 8100 PAH Additional Components Mix, Supelco®, Certified reference material, 1000 mug/mL in dichloromethane, : N/A
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EPA 610 polynuclear aromatic hydrocarbons mixture, certified reference material, Supelco®
Supplier: Merck
EPA 610 Polynuclear Aromatic Hydrocarbons Mixture, Supelco®, Certified reference material, in methanol: methylene chloride (1:1) (varied), : N/A
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SS TCL Polynuclear Aromatic Hydrocarbons Mix, certified reference material, Supelco®
Supplier: Merck
SS TCL Polynuclear Aromatic Hydrocarbons Mix, Supelco®, Certified reference material, 2000 mug/mL each component in methylene chloride: benzene (1:1), : N/A
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Semivolatile Base/Neutrals Surrogate Spike Mix, certified reference material, Supelco®
Supplier: Merck
Semivolatile Base/Neutrals Surrogate Spike Mix, Supelco®, Certified reference material, 5000 mug/mL each component in methylene chloride, : N/A
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Melting range PT, proficiency testing material, Supelco®
Supplier: Merck
Melting Range PT, Proficiency Testing Material
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EPA TCL base/neutrals mix 1, certified reference material, Supelco®
Supplier: Merck
EPA TCL Base/Neutrals Mix 1, Supelco®, Certified reference material, 2000 mug/mL each component in methylene chloride, : N/A
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Inland silverside (Menidia beryllina), 7-day Chronic, daily renewal, SSW, Supelco®
Supplier: Merck
Inland silverside (Menidia beryllina), 7-day Chronic, daily renewal, SSW
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Supelco® Colour Reference Solutions, set of colours B, ampoules of 2 ml, Merck
Supplier: Merck
The kit contains a set of nine brown colour reference standards (identified sequentially from B1 to B9) and a 1% hydrogen chloride solution in water. The solutions are produced from three primary metal salt solutions of ferric(III) chloride, cobalt(II) chloride, and copper(II) sulfate pentahydrate, in accordance with chapter 2.2.2 ′Degree of colouration of liquids′ of the European Pharmacopoeia (Ph. Eur.).
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Supelco® Colour Reference Solutions, set of colours B, BY, Y, GY, R, ampoules of 10 ml, Merck
Supplier: Merck
The kit contains set of brown(92936), yellow (83967), red (95872), greenish-yellow (90269), and brownish-yellow (72666) colour reference standards. The solutions are produced from three primary metal salt solutions of ferric(III) chloride, cobalt(II) chloride, and copper(II) sulfate pentahydrate, in accordance with chapter 2.2.2 ′Degree of colouration of liquids′ of the European Pharmacopoeia (Ph. Eur.).
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VOAs in soil 2 - low level, Supelco®
Supplier: Merck
VOAs in soil 2 - low level, Supelco®, : N/A
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Clean Sand #4, (CRM), Supelco®
Supplier: Merck
Clean Sand #4, Supelco®, : N/A
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Herbicides I - WS, Proficiency Testing Material, Supelco®
Supplier: Merck
Herbicides I - WS, Supelco®, Proficiency Testing Material, : N/A