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

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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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Bathocuproinsulfonat Dinatriumsalz Hydrat für die spektrophotometrische Bestimmung von Cu und Fe , Sigma-Aldrich®

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Dihydrorhodamine 123 has been used for the detection of free intracellular radicals or ROS (reactive oxygen species).

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2',7'-Dichlorfluorescein, Sigma-Aldrich®

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Produces highly insoluble dark green stain in histochemical studies.

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

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3-Nitrophthalimid 97%, Sigma-Aldrich®

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Bromkresolpurpur Natriumsalz, Sigma-Aldrich®

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Leucomalachite green has been used as a reagent in presumptive tests which are used to detect invisible blood stains.

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

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

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

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3-Indolyl-ß-D-galactopyranoside, Sigma-Aldrich®

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Methylgrün-Zinkchlorid-Doppelsalz, Sigma-Aldrich®

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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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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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Acetone 2,4-Dinitrophenylhydrazone 99% analytischer Standard, zur Umweltanalyse, Sigma-Aldrich®

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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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Intended for use in the silver stain (modified GMS) procedure.

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When blood films are stained using Giemsa Stain, the nucleus and cytoplasm of white blood cells take on characteristic blue or pink coloration. The use of purified eosin and thiazine dyes minimizes lot-to-lot variation.

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Yellow counterstain suitable for a wide range of histological staining procedures.

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Osmium tetroxide is also referred to as osmium and is mainly used as a secondary fixative of tissues. The molecule reacts with lipid moieties and is responsible for the oxidation of unsaturated bonds of fatty acids. This reaction adds density and contrast to biological samples. In normal tissues, presence of osmium results in intense black staining which can be viewed by normal eye. In addition, it can be used as a mordant (a molecule which combines with stain or dye at later stages) in electron microscopy, thereby enhancing lead staining.

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Papanicolaou stain imparts a characteristic range of coloration to exfoliative cells of vaginal, cervical, prostatic and other body secretions, allowing critical examination of nuclei and cytoplasmic components.

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Carmine is a red compound and is generally used with aluminum, iron and other metal salts to enhance its activity. During smear preparation, it is required for chromatin staining in fresh material. In presence of aluminum chloride, it is used for the staining of glycogen.

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Sudan III, Sigma-Aldrich®

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Protargol silver impregnation and neuronal selectivity for light and electron microscopic observations.

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N,N-Diethyl-p-phenylenediamine oxalate salt, (4-Amino-N,N-diethylaniline oxalate salt)

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Loefflers Methylene Blue stain is used for the identification of diphteria bacilli, since it differentiates the deeply staining metachromatic granules from the pale blue-staining cytoplasm.

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Fluorescent Brightener (Calcofluor White M2R) is used for the staining of fungi and as a viability stain. Industrial uses include use as a fluorescent brightening agent for cellulose and polyamide fabrics, paper and in detergents and soaps.