1072 Results for: "SIGMA ALDRICH MICROSCOPY"

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Tetrabromophenol Blue (TBPB) belongs to the group of sulfonephthalein acid-base indicators. It is employed in the potentiometric titration of the halogens with Hg₂(NO₃)₂. In addition, it has been used as a dye indicator in urine dipstick test to detect proteinuria. In this assay, with increasing concentration of urinary protein, TBPB sequentially changes colour from pale green to blue. Binding of TBPB to proteins is dependent on pH.

Supplier: SIGMA ALDRICH MICROSCOPY

Suitable as a laser dye.

Supplier: SIGMA ALDRICH MICROSCOPY

Cell permeable fluorescent detector of nitric oxide in living cells. 4,5-Diaminofluorescein diacetate (DAF-2 DA) has been used as a fluorescent dye for NO (nitric oxide) detection.

Supplier: SIGMA ALDRICH MICROSCOPY

Esterases are ubiquitous in nature and encompass a series of different enzymes acting upon select substrates.

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ACCUSPIN System-Histopaque-1077 products are intended for use in the isolation of lymphocytes and other mononuclear cells. The separation medium, Histopaque-1077, is a sterile-filtered, endotoxin-tested solution of polysucrose and sodium diatrizoate, adjusted to a density of 1,077 g/ml. ACCUSPIN System-HISTOPAQUE-1077 employs γ-irradiated 50 mL polypropylene centrifuge tubes specially designed with two chambers separated by a porous high-density polyethylene barrier ('frit'). Each tube is aseptically filled with 15 ml of Histopaque 1077. Each tube will separate 15-30 mL of anticoagulated blood.

Supplier: SIGMA ALDRICH MICROSCOPY

Azure B (azure I) ≥89% (dye content), certified by the Biological Stain Commission, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Azobenzene 98%, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Used for the preparation of electrically conducting glasses. Used to make solutions for the separation of RNA from DNA by density gradient centrifugation.

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Fluorescent dye.

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1,4-Dimethylpyridinium iodide,99%

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Benzaldehyde tosylhydrazone,98%

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trans-4-Stilbenemethanol

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Staining of bacterial spores according to Schaeffer and Fulton; Pappenheim stain when combined with Gram′s stain

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Building block for 'Anti-Bredt' strained molecules.

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Bis(cyclohexanone)oxaldihydrazone (Cuprizone) has been used in mice to study the effect of NG2 (neural/glial antigen 2) proteoglycan on toxic-induced demyelination. It has been used to induce demyelination in mice. It has been used to study cuprizone-induced demyelination and remyelination in the corpus callosum of mice.

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Bacteriochlorophyll from Rhodopseudomonas sphaeroides has been used as a standard to calibrate the high performance liquid chromatography (HPLC).

Supplier: SIGMA ALDRICH MICROSCOPY

(3-Aminopropyl)triethoxysilane forms aminopropyl derivative of glass, an adsorbent for affinity chromatography. It is used to prepare positively charged slides suitable for use with various immunohistochemical and in situ hybridisation procedures.

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Safranin O, also known as basic red 2, is a basic, cationic, and metachromatic azine dye used as a biological stain. The characteristic azine chromophore contains the phenazine, a planar, tricyclic dibenzopyrazine, which consists of two non-planar benzene rings linked by two nitrogen atoms. A delocalised positive charge, an alternation of aromatic and quinonoid structures, and diazotisable amine groups constitute the chromophoric system. c-Methylation makes this dye of moderate overall size. The trimethyl cationic form of safranine is lipophilic, whereas the dimethyl forms are weakly hydrophilic. The dye is commercially available as a chloride.

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2,6-Diphenyl-4H-thiopyran-4-one,96%

Supplier: SIGMA ALDRICH MICROSCOPY

N-[(3-(Anilinomethylene)-2-chloro-1-cyclohexen-1-yl)methylene]aniline monohydrochloride,94%

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1-Phenyl-2,3-naphthalenedicarboxylic anhydride,98%

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2-(4-Hydroxyphenyl)-5-pyrimidinol 90%, Sigma-Aldrich®

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2-(5-Bromo-2-pyridylazo)-5-(diethylamino)phenol,97% (Bromo-PADAP).

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Azophloxine has been used as a dye in Von Kossa staining and nonlinear optical studies. It is also used in photocatalytic tests.

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Amyloid protein is detected in tissue with Congo red, a metachromatic stain. Staining is intensified by pretreatment of tissue with alkaline sodium chloride.

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TETRANITRO BLUE TETRAZOLIUM 1 * 100 mg

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Disperse Black 9 1 * 5 g

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4-HYDROXY-3-METHOXYPHENYLACETIC ACID HOM 1 * 5 g

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3,3''-DIAMINOBENZIDINE TETRAHYDROCHLOR 1 * 250 g

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WRIGHT-GIEMSA STAIN SET 1 * 1 SET