1051 Résultats pour : "SIGMA ALDRICH MICROSCOPY"

Supplier: SIGMA ALDRICH MICROSCOPY

Disperse Yellow 3, Dye content 30 % (4-(2-Hydroxy-5-methylphenylazo)acetanilide; N-[4-(2-Hydroxy-5-methylphenylazo)phenyl]acetamide)

Supplier: SIGMA ALDRICH MICROSCOPY

Tris(4-nitrophenyl)amine, grade Technique, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4′,4′′-disulfonic acid sodium salt is a chelating agent for ferrous iron. It is also known as Ferrozine.

Supplier: SIGMA ALDRICH MICROSCOPY

Ozone-scavenging reagent that reacts rapidly with ozone. Potassium indigotrisulfonate has been used: In colorimetric method of measurement of atmospheric ozone, for measuring residual aqueous ozone by gas diffusion flow injection analysis, to determine O₃ concentration in water.

Supplier: SIGMA ALDRICH MICROSCOPY

Ethyl viologen diperchlorate has been used in in-situ spectroscopic studies of viologen based electrochromic device.

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Ethyl viologen dibromide (1,1-diethyl- 4,4-bipyridinium dibromide) has been used as an internal standard in analysis of paraquat and diquat in the serum using high-performance liquid chromatography.

Supplier: SIGMA ALDRICH MICROSCOPY

4,5-Dibromobenzene-1,2-diol 90%, grade technique, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

New methylene blue N has been used as a photosensitizer for the photodynamic inactivation of Candida albicans.

Supplier: SIGMA ALDRICH MICROSCOPY

Primuline, also known as direct yellow 59 or primuline yellow, is considered to be a more sensitive and non-destructive dye for lipids.

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Rose Bengal lactone 95%, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

4-(2-Pyridylazo)resorcinol monosodium salt is a chromophoric indicator and chromogenic chelator employed for the spectrophotometric determination of several metal ions.

Supplier: SIGMA ALDRICH MICROSCOPY

Thymoquinone has been used as an inhibitor of Escherichia coli ATP synthase and cell growth. It is also used as a drug against lower limb ischemia-reperfusion injury of sciatic nerve and femoral muscle. Thymoquinone is employed in preclinical studies as a neuroprotective and anticonvulsant agent.

Supplier: SIGMA ALDRICH MICROSCOPY

3, 6-Diaminoacridine hydrochloride has been used for studying cation transfer at the liquid–liquid interface. An intercalating dye.

Supplier: SIGMA ALDRICH MICROSCOPY

Useful for quantitating biotin binding sites. This reagent binds to avidin more quickly than conventional fluorescein biotin.

Supplier: SIGMA ALDRICH MICROSCOPY

General purpose cytoplasmic counterstain. Used with hematoxylin and eosin staining.

Supplier: SIGMA ALDRICH MICROSCOPY

Certified for use in the Stoval and Black method for demonstrating Negri bodies in the central nervous system of rabid animals.

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Rhodamine 19 perchlorate ~95% (teneur en colorant), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Methyl Purple,in H2O (Methyl Purple indicator solution)

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Most mucins contain serveral glycoproteins and can therefore be detected by stains for carbohydrates. Best carmine stain is specifically used for glycogens. Mucicarmine is an empirical stain. When applied for fungal staining, it stains the spores and hyphae as pale to dark red.

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Thymol meets analytical specification of Ph. Eur., BP, NF, 99 to 101%.

Supplier: SIGMA ALDRICH MICROSCOPY

Membrane impermeant, phenanthridinium intercalator dye excited by mercury or xenon-arc lamps or argon-ion laser. Suitable for use in fluorescence microscopy, confocal laser scanning microscopy, flow cytometry, and fluorometry. Used as a nuclear counterstain.

Supplier: SIGMA ALDRICH MICROSCOPY

Leukocyte Alkaline Phosphatase (LAP) kits are intended for the semi-quantitative demonstration of alkaline phosphatase activity in white blood cells.

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Regular Paraplast with approx. 0,8% DMSO added for enhanced ease of infiltration and sectioning. Paraffin polyisobutylene mixture is a tissue embedding medium composed of highly purified paraffin and polyisobutylene and a low level of dimethyl sulfoxide (DMSO) to enhance the rate of tissue penetration. Paraffin-polyisobutylene (76258) supports thin wrinkle-free sectioning down to 4 µm with more flexible and continuous ribbons.

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Azure B tetrafluoroborate, Dye content 95 %

Supplier: SIGMA ALDRICH MICROSCOPY

Differentiation solution comprises acidified ethanol or isopropanol that is used to decolourise hematoxylin stain. The duration of exposure to the solution determines the degree of decolourisation. Differentiation is a crucial step in hematoxylin-eosin staining to achieve the proper colour contrast necessary for visualisation, by selectively removing excess hematoxylin from the tissue section and leaving behind the desired staining intensity.

Supplier: SIGMA ALDRICH MICROSCOPY

Ionophore highly selective for Ca2+. Potentiates responses to NMDA but not to quisqualate. In cell culture, stimulates nitric oxide production by calmodulin-dependent constitutive nitric oxide synthase.

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Kit used to detect neutrophils in peripheral blood, bone marrow or tissue sections which have been paraffin embedded.

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New Coccine has been used to determine its decolorization by fungi Phanerochaete chrysosporium and Pleurotus sajorcaju.

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Eosine-bleu de méthylène selon May-Grünwald solution, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Silver nitrate along with iodine are among several inorganic substances used to induce colour in microscopical preparations. Silver nitrate as a biological stain exploits the strong colors of colloidal metallic silver. Silver nitrate is an important component of the silver staining that is used for the detection of proteins separated by polyacrylamide gel electrophoresis. Silver nitrate is a component of the silver stain kit. It is required for image development in diamine as well as non-diamine silver staining.