Hledali jste: Standardy
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.
Elemental analysis standards, portland cement type Ⅲ, NIST-1887B
Supplier: LGC Standards PROMOCHEM
These are intended primarily for the evaluation and calibration of methods for analysis of cements and materials of similar matrix.
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Chemical Oxygen Demand COD 5000 mg/L Calibration Standard
Supplier: CPACHEM
Shelf life on ship date: 24 months - store in a refrigerator at temperatures between 2 to 8 °C.
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Reference materials, acid number standards, in hydrocarbon oil, VHG
Supplier: LGC Standards PROMOCHEM
These reference materials are intended for use in the determination of acid number (AN) in petroleum products in accordance with ASTM D664/IP 177 (by potentiometric titration) or ASTM D974 (by colour-indicator titration).
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Reference materials, cloud point reference, VHG
Supplier: LGC Standards PROMOCHEM
These reference materials are intended for use in accordance with ASTM D2500 for the determination of the cloud point of petroleum products. The cloud point of a petroleum product is an index of the lowest temperature of their utility for certain applications.
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Elemental analysis standards, custom blend S-21+K, CONOSTAN
Supplier: LGC Standards PROMOCHEM
Custom blend S-21+K, CONOSTAN®, 885 ppm
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Reference standard, water saturated octanol, NIST
Supplier: LGC Standards PROMOCHEM
NIST-2890, water saturated octanol, NIST
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Conductivity PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Conductivity PT, Proficiency Testing Material
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Potassium Dichromate Solution for Absorbance Control
Supplier: CPACHEM
2×10 ml Potassium dichromate solution for absorbance control 235 - 350 nm and 6×10 ml
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Ceriodaphnia dubia, proficiency testing material, Supelco®
Supplier: Merck
Ceriodaphnia dubia, 3-Brood Chronic, daily renewal, MHSF, Proficiency Testing Material
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Sheepshead minnow (Cyprinodon variegatus), Proficiency Testing Material, Supelco®
Supplier: Merck
Sheepshead minnow (Cyprinodon variegatus), 48-hr Acute, nonrenewal, 25C, SSW
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Micro particles based on melamine resin nile blue-marked, analytical standard, Supelco®
Supplier: Merck
Aqueous suspension, 2,5% solids, Velikost částic: 10 µm, Přesnost: std dev <0,15 µm, Analytical standard
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pH <791> PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Suitable for 791 per USP. Proficiency Testing Kit containing three samples ranging from pH 5,0 to 10,00.
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Fathead minnow (Pimephales promelas), Proficiency Testing Material, Supelco®
Supplier: Merck
Fathead minnow (Pimephales promelas), 48-hr Acute, nonrenewal, 25C, 20% DMW, Proficiency Testing Material
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Oil and grease in seawater - whole volume - WP proficiency testing material, Supelco®
Supplier: Merck
Oil and Grease in Seawater - Whole Volume - WP, Proficiency Testing Material
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Loss on drying PT, proficiency testing material, Supelco®
Supplier: Merck
Loss on Drying PT, Proficiency Testing Material
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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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Micro particle size standard based on polystyrene monodisperse, analytical standard, Supelco®
Supplier: Merck
Aqueous suspension, 2% solids, Velikost částic: 30,0 µm, Přesnost: std dev <0,5 µm, Analytical standard
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Vitamins - IR identification PT, proficiency testing Material, Supelco®
Supplier: Merck
Vitamins - IR Identification PT, Proficiency Testing Material
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Residual Solvents Class IIA PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Residual Solvents Class IIA PT, Proficiency Testing Material
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Antibiotics - IR Identification PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Antibiotics - IR Identification PT, Proficiency Testing Material
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Total Organic Carbon (TOC) PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Total Organic Carbon (TOC) PT, Proficiency Testing Material
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Mysid (Mysidopsis bahia, Americamysis bahia), 7-day Chronic, daily renewal, SSW, Supelco®
Supplier: Merck
Mysid (Mysidopsis bahia, Americamysis bahia), 7-day Chronic, daily renewal, SSW
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Mysid (Mysidopsis bahia, Americamysis bahia), Proficiency Testing Material, Supelco®
Supplier: Merck
Mysid (Mysidopsis bahia, Americamysis bahia), 48-hr Acute, nonrenewal, 25C, SSW, Proficiency Testing Material
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Micro particles based on polymethacrylate, analytical standard, Supelco®
Supplier: Merck
Particle suspension 10% solids, Velikost částic: 60 µm, Přesnost: std dev <2 µm, Analytical standard
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Inland silverside (Menidia beryllina), 48-hr acute, nonrenewal, 25 °C, SSW, Supelco®
Supplier: Merck
Inland silverside (Menidia beryllina), 48-hr Acute, nonrenewal, 25 °C, SSW
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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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1,1-Dichloropropene 1,000 µg/ml in methanol
Supplier: abcr
Organic Standard, 1,1-Dichloropropene 1,000 µg/ml in methanol, Typ balení: Glass bottle
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Colour Standards, Saybolt
Supplier: LGC Standards PROMOCHEM
This product is intended for the calibration and/or verification of equipment used for the measurement of colour of liquid samples. This product may also be used for visual based methodology.
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DSC calibration standard, benzoic acid
Supplier: LGC Standards PROMOCHEM
Benzoic acid, Melting pt.: 122.35 °C
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Holmium Oxide Solution for Wavelength Control
Supplier: CPACHEM
Holmium oxide solution for wavelength control acc. 2.2.25 of Ph Eur
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Dodavatel: GRANT INSTRUMENTS
Dodavatel: BOCHEM
Dodavatel: VWR Collection
Dodavatel: OMEGA BIO-TEK
Dodavatel: Liebherr
Dodavatel: DWK Life Sciences
Dodavatel: Thermo Fisher Scientific
Dodavatel: VWR Collection
Dodavatel: Oxford Nanopore Technologies
Dodavatel: Integra
Dodavatel: Industrial Physics
Dodavatel: AAT BIOQUEST
Dodavatel: Integra
Dodavatel: Palbam
Dodavatel: VWR Collection
Dodavatel: VWR Collection
Dodavatel: FACELLITATE
Dodavatel: NANOENTEK
Dodavatel: Greiner Bio-One