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Procurou por: Water+Determination+(by+Karl+Fischer+method)+Standards


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Imagem do Produto-PIER23229

Compat-Able™ BCA™ Protein assay kit

Código de Artigo: (PIER23229)
Fornecedor: Thermo Fisher Scientific
Descrição: The Compat-Able™ Reagents remove salts, detergents, reducing agents and other substances from protein samples to eliminate interference with protein assays. The protocol selectively precipitates all of the protein, thereby allowing the non-protein components to be easily decanted and removed. The purified, precipitated protein is redissolved in water, making it ready for accurate determination of the protein concentration by standard protein assay methods. The procedure is accomplished in less than 10 min with just a few simple steps. The Compat-Able™ Preparation Set is available conveniently bundled with the Pierce BCA™ Protein Assay Kit.
UOM: 1 * 1 KIT
Imagem do Produto-525-1569

VWR®, Centrifuge Tubes, ASTM

Fornecedor: VWR Collection
Descrição: Borosilicate glass 3.3, used for the determination of water and sediments in crude oils according to test method ASTM D 96.

Image Unavailable-ICNA0215384601

Neuraminidase, MP Biomedicals

Fornecedor: MP Biomedicals
Descrição: Neuraminidase (Sialidase: Acylneuraminyl hydrolase; EC 3.2.1.18) From Arthrobacter ureafaciens lyophilised powder with salts. The salts are composed of sodium-potassium phosphate to give a solution of 10 mM phosphate buffer (pH 7) when enzyme is reconstituted with water to make activity of 1 unit per ml. Activity: >60 units/mg protein for NAN-lactose >25 units/mg protein for bovine submaxillary mucin >20 units/mg protein for colominic acid Protein is determined by the method of Lowry et al. with bovine albumin as a standard.6 Unit definition: One unit will liberate 1,0 µmole of N-acetyl-neuraminic acid (NANA) per minute at pH 5,0 at 37 °C, using either one NAN-lactose, bovine submaxillary mucin, or colominic acid as a substrate.

Image Unavailable-32072-25MG

Pesticide reference standard, Simeton, PESTANAL®, analytical standard, Supelco®

Código de Artigo: (32072-25MG)
Fornecedor: Merck
Descrição: Simeton has been used as internal standard in ESI-LC/MS method for quantifying environmental contaminants and in LC-MS/MS analysis for determination of pesticide residue from constructed wetlands.
UOM: 1 * 25 mg
Imagem do Produto-34241-250G

, Hydranal™ agente de secagem, para ar e gases para titulação Karl Fischer, Ø ~2 mm, Fluka™

Código de Artigo: (34241-250G)
Fornecedor: Honeywell Chemicals
Descrição: , Hydranal™ agente de secagem, para ar e gases para titulação Karl Fischer, Ø ~2 mm, Fluka™
UOM: 1 * 250 g

MSDS


Image Unavailable-37866-1L

o-Xileno, Hydranal™ solubilizador para titulação Karl Fischer, Fluka™

Fornecedor: Honeywell Chemicals
Descrição: o-Xileno, Hydranal™ solubilizador para titulação Karl Fischer, Fluka™

MSDS

Imagem do Produto-16024.1000

VWR®, Total Hardness Indicator, Tablets for Hardness of Water Determinations, Avantor

Fornecedor: VWR Chemicals
Descrição:

Indicator tablets for determination of water hardness by titration with EDTA.

Specifications
Minimum weight: ≥ 0.20 g
Maximum weight: ≤ 0.23 g
Disintegration time (at 25°C): ≤ 150 s
Application test: conforms

The tablets are dissolved in 100 ml of the water sample to be tested, which has been buffered at pH 10 with 1 ml of Ammonia/ Ammonium chloride buffer solution, and then titrated with EDTA solution (0,01 M) till the sample turns from red to blue.
Total hardness in mg/l = 10×ml of titrant used.

Control samples of  calcium carbonate should be used to calibrate the method.

MSDS Certificados Novo produto

Image Unavailable-51535-1G

Organic reference standard, Methyl heneicosanoate, analytical standard, Supelco®

Código de Artigo: (51535-1G)
Fornecedor: Merck
Descrição: Methyl heneicosanoate can find applications as an internal standard in the quantitative determination of fatty acids and their isomers composition using gas chromatography method of analysis (GC).
UOM: 1 * 1 g
Imagem do Produto-705-1501

Floculadores

Fornecedor: VELP SCIENTIFIC
Descrição: The FP4, FC S, and JLT Series assist laboratory technicians in the environmental sector by providing tools for conducting the jar test and leaching test, which are essential for water treatment and environmental protection. These tests help determine the most effective methods for improving water quality and assessing the potential environmental risks posed by pollutants.

Image Unavailable-30988-50MG

Supelco® TraceCERT® Organic Reference Standard, Flutolanil

Código de Artigo: (30988-50MG)
Fornecedor: Merck
Descrição: The flutolanil CRM may also find following uses: Examine the reproductive endpoints on the gonad endocrine system of the parental zebrafish after chronic exposure to different concentrations of flutolanil for 60 days. Spectroscopic analysis of acetamiprid flutolanil and etofenprox residues extracted from tomato fruits. Development and validation of two robust chromatographic methods for estimation of tomatoes specific acetamiprid flutolanil and etofenprox residues on fruits before food processing and serving. To investigate the developmental toxicity and the potential mechanism of thyroid endocrine disruption induced by flutolanil in zebrafish embryos based on H¹ NMR metabolomics analysis. To develop a sensitive LC-MS/MS analytical method for the determination of residual flutolanil and its principal metabolites and conjugates in livestock and seafood products.
UOM: 1 * 50 mg
Image Unavailable-44189-50MG

Organic reference standard, Isoamyl 4-methoxycinnamate, analytical standard, Supelco®

Código de Artigo: (44189-50MG)
Fornecedor: Merck
Descrição: Isoamyl 4-methoxycinnamate may be used as a reference standard in the determination of isoamyl 4-methoxycinnamate in water samples using liquid chromatography coupled with ultraviolet spectrophotometry detector (LC-UV).
UOM: 1 * 50 mg
Image Unavailable-ICS006-500ML

Chlorite ion chromatography (IC) standard, Supelco®

Fornecedor: Merck
Descrição: Chlorite IC standard may be used in the determination of disinfection by-product, chlorite in water samples using ion chromatography technique (IC)

Certificados

Image Unavailable-39116-10MG

Supelco® TraceCERT® Organic Reference Standard, Tricyclazole

Código de Artigo: (39116-10MG)
Fornecedor: Merck
Descrição: The tricyclazole CRM may also find the following uses: Determination of tricyclazole content in paddy rice using sliver colloid as a substrate and pyridine as an internal standard by surface-enhanced Raman spectroscopy (SERS). To detect residues of tricyclazole and thiram in pear fruit extracts using SERS. Dissipation studies of penoxsulam tricyclazole and profoxydim in rice paddy systems using HPLC-Diode Array Detection (DAD). Determination of tricyclazole residues in rice using liquid chromatography-tandem mass spectrometry (LC-MS/MS) along with the QuEChERS method of sample preparation. Degradation of tricyclazole (TC) in an aqueous solution and real pesticide industry wastewater (RPW) by electron beam (EB) radiation.
UOM: 1 * 10 mg
Image Unavailable-45634-50MG

Pesticide reference standard, Promecarb, PESTANAL®, analytical standard, Supelco®

Código de Artigo: (45634-50MG)
Fornecedor: Merck
Descrição: Promecarb may be used as a reference standard for the determination of promecarb in water by solid-phase extraction and liquid chromatography coupled with ionspray mass spectrometry.
UOM: 1 * 50 mg
Image Unavailable-94685-500ML

Organic reference standard, Vanadate-molybdate reagent, for phosphate determination, p.a., Supelco®

Código de Artigo: (94685-500ML)
Fornecedor: Merck
Descrição: Vanadate-molybdate reagent can be prepared by dissolving ammonium molybdate and ammonium vanadate in distilled water along with concentrated nitric acid.
UOM: 1 * 500 mL

Certificados


Imagem do Produto-90243-100ML

Multi-element standard solution 1 for ICP, TraceCERT®, Supelco®

Código de Artigo: (90243-100ML)
Fornecedor: Merck
Descrição: Multi-element standard solution 1 has been used in the analysis of pollutants like trace elements in water using total reflection x-ray fluorescence (TXRF) method and inductively coupled plasma mass spectrometry(ICP-MS).
UOM: 1 * 100 mL

Certificados


Preço sob consulta
O stock para este item é limitado. Por favor, certifique-se de que efetuou o seu login para visualizar o stock disponível. Se a call ainda é exibida e precisar de ajuda, por favor, ligue para 213 600 770
O stock para este item é limitado. Por favor, certifique-se de que efetuou o seu login para visualizar o stock disponível. Se a call está visível e precisar de ajuda, por favor, ligue para 213 600 770
Este produto é sujeito a regulamentação especifica.
Em caso de encomenda, será contactado a solicitar documentação complementar necessária e/ou obrigatória (licença, autorização ou declaração de uso final) para a continuidade do pedido. Agradecemos a vossa compreensão
Este produto é sujeito a regulamentação especifica.
Em caso de encomenda, será contactado a solicitar documentação complementar necessária e/ou obrigatória (licença, autorização ou declaração de uso final) para a continuidade do pedido. Agradecemos a vossa compreensão.
Este produto está bloqueado. Para obter mais informações, contacte a VWR através do número 213 600 770.
O produto pretendido já não se encontra disponível. O produto indicado é um substituto.
Este produto encontra-se em rutura de stock. Poderá encontrar alternativas pesquisando pelo código de artigo indicado acima. Se precisar de ajuda, por favor contacte a VWR através do 213 600 770.
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