834 Risultati per: "SIGMA ALDRICH MICROSCOPY"

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Solvent Blue 38 is a phthalocyanine stain, used for staining myelin, neurons and glial fibres.

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Nile Blue A has been used for the staining of eggs before transferring them to the hosts. It has been used for the staining of cells.

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4-(4-Nitrophenylazo) resorcinol, also known as azo violet or magneson I, is a red colored powder. It functions as a spot test reagent and forms blue lake on reaction with Mg(OH)₂ in alkaline solution. It is mainly used for determining the presence of magnesium in the solution. 4-(4-Nitrophenylazo)resorcinol is a pH indicator.

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Bromophenol blue has been used in the sample buffer prepared for western blotting. A tracking dye for nucleic acid or protein electrophoresis in agarose or polyacrylamide gels.

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4,5-Methylenedioxy-1,2-phenylenediamine dihydrochloride is a fluorescence tag for α keto acids. It is also required for the derivatisation of sialic acids in presence of dilute sulfuric acid. The method allows determination of sialic acids.

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In living mice, acriflavine hydrochloride has been used in the confocal laser endomicroscopy to check the crypt structure in mucosa. It has also been used in Neurospora strain selection by checking the acriflavine resistance.

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Useful for staining DNA, chromosomes and nuclei. May be used for fluorescence microscopy or flow cytometry.
Excitation max. = 346 nm
Emission max. = 460 nm
bisBenzimide H 33342 trihydrochloride has been used for the staining of viable and apoptotic.

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to be used with SIAL 78711 RenLam M-1 (Epoxy Embedding Medium)

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To be used with SIAL 69571 Ren HY 956 (Hardener for Epoxy Embedding Medium)

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4,4'-Dinitro-2-biphenylamine,98%

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Arsenazo III has been used as a color forming reagent to determine uranium concentration.

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Fluoroshield™ is an aqueous mounting medium for preserving fluorescence of tissue and cell smears.

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Chlorazol Black has been used to monitor the infection of mycorrhizal Allium porrum in plant roots. It has also been used for the staining of copepods.

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1,2,3,4-Tetrahydro-2,2,4,7-tetramethylquinoline,97%

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Used as a red nuclear counterstain in various cytochemical procedures.

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Rhodamine 123 is useful as a laser dye and to have selective cell growth effects. It has also been used to measure mitochondrial membrane potential.

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General purpose nuclear stain, progressive type. Used with hematoxylin and eosin staining.

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Trimethylchlorosilane: hexamethyldisilazane: pyridine (1:3:9) reagent for preparing TMS derivatives of amino acids, sugars, etc.

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Fast Red Violet LB Salt has been used for the detection of tartrate-resistant acid phosphatase (TRAP) in tissue sections.

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Redox indicator. Blue fluorescence until oxidized to ethidium. Dihydroethidium has been used as a superoxide probe in bovine pulmonary artery endothelial cell (BPAEC).

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Acid Blue 25, Dye content 45 %

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4-(2-[6-(Dioctylamino)-2-naphthalenyl]ethenyl)-1-(3-sulfopropyl)pyridinium inner salt. ≥95% (HPLC), solid (Di-8-ANEPPS)

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1-Methoxy-5-methylphenazinium methyl sulfate (MPMS) is a photochemically stable electron-transport mediator between NAD(P)H and tetrazolium dyes. The reduced form of MPMS converts tetrazolium salt to purple precipitate formazan. It is a very stable and non-enzymic electron carrier that mediates electron transfer by dehydrogenases in vitro to various electron acceptors such as tetrazolium dyes or the electrode of an enzymic electric cell.

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Ethyl 4'-hydroxy-4-biphenylcarboxylate,98%

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7-Diethylamino-3-(4-maleimidophenyl)-4-methylcoumarin has been used: as a nontoxic substitute for conjugation with antibody(93) to aid fluorescent detection of Coenzyme A (CoA-SH) in human N-myristoyltransferases assay (94)

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Reactive Black 5 (RB5) has been: used in an optimization study on the photocatalytic degradation of RB5 dye in synthetic greywater effluent (i.e. aqueous RB5 in distilled water), in order to understand the effects of different photoreactor parameters on the degradation kinetics. As a textile dye to investigate the anaerobic reduction in upflow stirred packed-bed reactors (USPBRs) with biological activated carbon (BAC) system. Used in the performance evaluation of dye removal forlarge molecule substance.

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As a direct dye, Direct Yellow 27 is an acid dye with large molecules that will bind to cellulose fibers directly. It is mono azo dye with good light fastness.

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Verde Fast, Sigma-Aldrich®

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4,7-Dihydroxy-1,10-phenanthroline, Dye content ≥30 % (1,10-Phenanthroline-4,7-diol)

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Percoll® is a classic medium for density gradient centrifugation of cells, viruses, and subcellular particles. It consists of colloidal silica particles of 15 – 30 nm diameter (23% w/w in water), coated with polyvinylpyrrolidone (PVP).