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Zinquin ethyl ester. ≥95% (HPLC), solid (2-Methyl-8-[(4-methylphenyl)sulfonylamino]-6-(ethyloxycarbonylmethyloxy)quinoline)

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Fast Red TR Salt 1,5-naphthalenedisulfonate salt has been used for tartrate-resistant acid phosphatase (TRAP) staining in tissue sections. It has been used as a chromogen in APAAP (alkaline phosphatase-anti-alkaline phosphatase) procedure.

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Fluorescent probe for hydrophobic (non-polar) regions in proteins and nucleoproteins.

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Methyl-3-amino-5,6-dichloropyrazine-2-carboxylate 97%, Sigma-Aldrich®

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For use in the Naphthol AS-D Chloroacetate Esterase Kit No. 91-C.

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Acid Alcohol. Acidified alcohol solution for the differentiation of regressive hematoxylin stains.

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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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Chromotrope FB, also known as acid red 14 (AR14), is a bright orange-red powder. It belongs to the class of monoazides.

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Erythrosin B disodium salt, Sigma-Aldrich®

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Phloxine B has been used to trace the uptake of double stranded RNA by green peach aphids. It has also been used to stain yeast strains.

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Wright stain solution was used during the exudate analysis of white blood cell concentration.

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Fura 2-AM (Fura 2) is a calcium-specific ratio-metric fluorescent dye. It is also known as acetoxy-methyl-ester. In response to calcium ions, ratio metric dyes like Fura 2 changes their respective excitation or emission spectra. The intracellular calcium concentration is determined by the fluorescence emission ratio or excitation at distinct wavelengths. Fura 2 has an emission peak at 505 nm, and the excitation peak ranges between 340 to 380 nm and is the preferred calcium indicator.

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Histo/Zyme is a stabilized proteolytic enzyme in buffered solution, used to unmask immunoreactive sites altered by fixation and/or the embedding process. Treatment with a proteolytic enzyme in immunohistochemistry (IHC) is required to digest excess linkages and expose the antigen. The use of Histo/Zyme results in superior staining over traditionally used enzyme pretreatments, such as pepsin and trypsin. Moreover, Histo/Zyme requires only a brief incubation at room temperature. Performing antigen recovery with Histo/Zyme will allow you to dilute the primary antibody 5 to 10 fold further and achieve optimal staining.

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Suitable for use as a catalyst for electron microscopy. Modified to render it safe in transit.

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Intended for use in the Sigma Masson Trichrome Procedure, HT15.

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N,N-Dibutylaniline 97%, Sigma-Aldrich®

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Citrate buffer solution, 0.38 mol/L, pH 5.4 when diluted according to procedure 386A.

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Naphthalene black 10B (naphthol blue black, acid black 1) ~50% (dye content), Sigma-Aldrich®

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Methylene blue hydrate ≥95% (dried basis), Sigma-Aldrich®

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Para red is a biological stain. It is used as a fat soluble chemical dye and food additive. It is a banned colorant and a number of analytical techniques have been developed to detect it in food. Para Red may be used to make standards for analysis.

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Application in high throughput screening.

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Auramine O has been used to study the cuticle/cutin in the epidermis of the pollen presenter in Vangueria infausta. Auramine O is used for the staining of acid-fast organisms, coccidia. Auramine O along with carbol generates brilliant yellow fluorochrome of tubercle bacilli. It is effective in detecting positive cases of tuberculosis. Auramine O binds to the mycolic acid in the bacterial cell wall. Certified for use by fluorescence microscopy in Churukian′s modification of Truant′s fluorescent method for acid fast bacilli on paraffin sections.

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May Grunwald's eosin-methylene blue solution, Sigma-Aldrich®

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Kit is used to demonstrate acid phosphatase and tartrate resistant acid phosphatase (TRAP) in blood, bone marrow and tissue touch preparations.

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Intended for use in the study of connective tissue, muscle and collagen fibers. Stains collagen green.

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SynaptoGreen(TM) C4. ≥95% (HPLC), solid (FM1-43; N-(3-triethylammoniumpropyl) -4-(4-(dibutylamino)styryl) pyridinium dibromide; Pyridinium, 4-[2-[4-(dibutylamino)phenyl]ethenyl]- 1-[3-(triethylammonio)propyl]- , dibromide)

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Pyridine-3,4-dicarbonitrile, Sigma-Aldrich®

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Disperse blue 1 is a grey to black powder. Disperse dyes are known to be insoluble in water and are applied to the substrate as suspensions or dispersions by dissolving in hydrophobic regions of the polymers making up the fiber.

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Acetaldehyde 2,4-dinitrophenylhydrazone analytical standard, for environmental analysis, Sigma-Aldrich®

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May Grunwald's eosin-methylene blue solution, Sigma-Aldrich®