13092 results 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.

Sort By

« ‹ 433 434 435 › »

Organic reference standard, 2,3,3',4,4',5,5',6-Octachlorobiphenyl (PCB No. 205) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3,3',4,4',5,5',6-Octachlorobiphenyl (PCB No. 205) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,2',3,3',4,5'-Hexachlorobiphenyl (PCB No. 130) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,2',3,3',4,5'-Hexachlorobiphenyl (PCB No. 130) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,2',3,3',4,4'-Hexachlorobiphenyl (PCB No. 128) 100 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,2',3,3',4,4'-Hexachlorobiphenyl (PCB No. 128) 100 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,2',3,4,4',5,6-Heptachlorobiphenyl (PCB No. 181) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,2',3,4,4',5,6-Heptachlorobiphenyl (PCB No. 181) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Pesticide reference standard, (±)-α-BHC 100 µg/ml in n-nonane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, (±)-α-BHC 100 µg/ml in n-nonane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 3,5-Dinitrotoluene 100 µg/ml in methanol

Supplier: LGC Standards PROMOCHEM

Organic Standard, 3,5-Dinitrotoluene 100 µg/ml in methanol, Pack type: Glass bottle

Expand 1 Items

Polystyrene film - IR transmission wavelength standards, NIST-1921B

Supplier: LGC Standards PROMOCHEM

NIST-1921B, Polystyrene film - IR transmission wavelength

Expand 1 Items

Organic reference standard, Cefradine CRS, Ph.Eur., RS

Supplier: EDQM

Filled under inert atmosphere and controlled humidity.

Expand 1 Items

Food matrix reference material, tea leaves - trace elements

Supplier: LGC Standards PROMOCHEM

This reference material is made from black tea.

Expand 1 Items

Palladium standard solution, for ICP, in 20% HCl, VHG

Supplier: LGC Standards PROMOCHEM

The solutions are intended for use as a certified reference material or calibration standard for inductively coupled plasma optical emission spectroscopy (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), flame or furnace atomic absorption spectroscopy (AA or GFAA), x-ray fluorescence spectroscopy (XRF), and other techniques for elemental analysis.

Expand 3 Items

4-Chlorobiphenyl-[13C12] (PCB No. 3) 40 µg/ml in n-nonane (99% 13C), CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 4-Chlorobiphenyl-[13C12] (PCB No. 3) 40 µg/ml in n-nonane (99% 13C), Pack type: Glass bottle

Expand 1 Items

Dibutyl phthalate-[ring-D4] 100 µg/ml in n-nonane (98% D)

Supplier: LGC Standards PROMOCHEM

Organic Standard, Dibutyl phthalate-[ring-D4] 100 µg/ml in n-nonane (98% D), Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,2',3,3',4,4',5,6-Octachlorobiphenyl (PCB No. 195) 100 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,2',3,3',4,4',5,6-Octachlorobiphenyl (PCB No. 195) 100 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,2',3,3',4,4',6,6'-Octachlorobiphenyl (PCB No. 197) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,2',3,3',4,4',6,6'-Octachlorobiphenyl (PCB No. 197) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

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.

Expand 2 Items

Impurity and API standards, 3-O-methylatorvastatin calcium salt

Supplier: LGC Standards PROMOCHEM

Organic Standard, (3R,5R)-7-[2-(4-Fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]-5-hydroxy-3-methoxyheptanoic acid calcium salt

Expand 1 Items

Trace elements in water, NIST-1643F

Supplier: LGC Standards PROMOCHEM

This reference standards are intended to use in the determination of trace elements in fresh water. The solution contains nitric acid at a volume fraction of approximately 2%, equivalent to an amount of substance concentration (molarity) of approximately 0,32 mol/l and also it simulates the elemental composition of fresh water.

Expand 1 Items

Reference materials, metals in biodiesel Standard, VHG

Supplier: LGC Standards PROMOCHEM

This solution is intended for use as a calibration or reference standard for the analysis of these analytes in biodiesel or related organic matrices according to ASTM D6751. Sulfur is present in the raw materials and is not certified.

Expand 1 Items

Organic reference standard, 2,3,3',5-Tetrachlorobiphenyl (PCB No. 57) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3,3',5-Tetrachlorobiphenyl (PCB No. 57) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3,4,5,6-Pentachlorobiphenyl (PCB No. 116) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3,4,5,6-Pentachlorobiphenyl (PCB No. 116) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3',4',5'-Tetrachlorobiphenyl (PCB No. 76) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3',4',5'-Tetrachlorobiphenyl (PCB No. 76) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3',5-Trichlorobiphenyl (PCB No. 26) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3',5-Trichlorobiphenyl (PCB No. 26) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3,4',5-Tetrachlorobiphenyl (PCB No. 63) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3,4',5-Tetrachlorobiphenyl (PCB No. 63) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3',4-Trichlorobiphenyl (PCB No. 25) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3',4-Trichlorobiphenyl (PCB No. 25) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3,3',4-Tetrachlorobiphenyl (PCB No. 55) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3,3',4-Tetrachlorobiphenyl (PCB No. 55) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,4',6-Trichlorobiphenyl (PCB No. 32) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,4',6-Trichlorobiphenyl (PCB No. 32) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3',5'-Trichlorobiphenyl (PCB No. 34) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3',5'-Trichlorobiphenyl (PCB No. 34) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

Organic reference standard, 2,3,4',6-Tetrachlorobiphenyl (PCB No. 64) 35 µg/ml in isooctane, CIL

Supplier: LGC Standards PROMOCHEM

Organic Standard, 2,3,4',6-Tetrachlorobiphenyl (PCB No. 64) 35 µg/ml in isooctane, Pack type: Glass bottle

Expand 1 Items

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).

Expand 1 Items

Meat homogenate - nutrients, NIST-1546A

Supplier: LGC Standards PROMOCHEM

This standard reference material is intended for determining fatty acids, cholestrol, proximates, calories, elements, vitamins and amino acids in canned meat products and similiar materials. The meat homogenate is a mixture of pork and chicken products blended together in a commercial process.