1070 Résultats pour : "SIGMA ALDRICH MICROSCOPY"

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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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Cresyl Violet perchlorate is suitable as a laser dye.

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Produces highly insoluble dark green stain in histochemical studies.

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Certified for use as a constituent of MacNeal′s tetrachrome stain for blood.

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This material has a structure similar to Granular Blue (CAS No. 71431-29-3). It has been referred to in some literature as Granular Blue, a fluorescent neuronal tracer.

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Tetrazolium Violet is a monotetrazolium salt which forms water-insoluble formazans. These salts are mainly used as indicators of extracellular redox activity and cell redox potential. Tetrazolium violet is positively charged and cell-permeable.

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Acid Blue 80, Dye content 40 %

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1,3-Diphenylacetone-p-toluenesulphonylhydrazone ≥98%, Sigma-Aldrich®

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Gram’s crystal violet solution, also known as gentian violet or hexamethyl pararosaniline, is a basic, cationic, acidotropic aminoarylmethane dye. It is a hexa-N-methylated triaminotriphenylmethane with a moderately sized lipophilic cation and a slightly nonplanar conjugated system. It is used in bacteriology as the primary stain in Gram staining to differentiate Gram-positive and Gram-negative bacteria. It is known to possess antibacterial and antifungal properties.

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Methyl violet for microscopy (Bact., Bot., Hist.), indicator (pH 0.1 - 2.0), mixture of polymethylated pararosaniline hydrochlorides.

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

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Phenol Red sodium salt is widely used as a pH indicator. At a pH of 6,4 and below, phenol red solution will have a yellow colour. At a pH of 8,2 and above, it will have a red colour. It is commonly used in culture media to detect neutral to acidic pH changes.

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Quinaldine red has been used as a fluorescent probe for α1-acid glycoprotein (AAG). It is also used a diagnostic assay manufacturing, hematology, histology.

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Chromeazurol S has been used to evaluate siderophore production by rhizosphere bacteria.

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Fluoresceinamine, isomer I has been used as a probe in immobilization and is used to determine its ability to potentiate the antiviral activity of poly r (A-U).

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

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Naphthol AS-BI Phosphoric acid solution for use in the Sigma Acid Phosphatase (TRAP) Procedure, Kit 387A.

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

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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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2-Amino-5,6-dimethylbenzimidazole, Sigma-Aldrich®

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Bromure de S-éthylthiouronium, Sigma-Aldrich®

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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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Quinoline Yellow, Mixture of the mono- and disulfonic acids of Quinoline Yellow (Acid Yellow 3)

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Sudan IV is a hydrophobic azo dye. It stains triglycerides and imparts an intense red colour. The dye does not stain lipid droplets or phospholipids. It is also used a diagnostic assay manufacturing, hematology, histology.

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Popular hematology stain used for differentially staining the cellular elements of blood. For dip, rack, and batch staining techniques.

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Bathocuproin sulphonate disodium salt hydrate pour la détermination de Al, Be, Zn, Ga, In, Sc, Sigma-Aldrich®

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Vert de methyle, Sigma-Aldrich®

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

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Nile blue chloride has been used to stain non-aqueous phase in fluorescence microscopy studies.

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Schiff base which can be converted to amino alcohols and amino esters.