"SIGMA ALDRICH MICROSCOPY"

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Cresol red sodium salt, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Congo red, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Gram’s safranin solution, also known as Safranin T or Basic Red 2, is a ready-to-use staining solution that comprises 10% safranin in ethanol. Safranin is a basic, cationic, azine dye containing a planar, diaminophenazine chromophore, with a phenyl substituent attached to a ring nitrogen. The trimethyl cationic form of safranine is lipophilic, whereas the dimethyl forms are weakly hydrophilic. It is most notably used in bacteriology as a counterstain in Gram staining to differentiate between Gram-positive and Gram-negative bacteria.

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

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Standard stain for microscopy. It may be also be used as a reference standard in the determination of azocarmine G in food products and beverages using high performance liquid chromatography coupled with diode array detector (HPLC-DAD).

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A high sensitivity dye used to detect single nucleic acid molecules. DAPI has been shown to detect a single DNA molecule in solution, and to detect femtograms of DNA in single cells and chloroplasts.

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Acridine Orange solution.

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An important fluorophore prepared in high purtity with a detection limit of TMR-labeled amino acids by capillary electrophoresis of approx. 600 molecules. Readily excited by the 546 nm spectral line from mercury-arc lamps used in fluorescent microscopes, and is intrinsically more photostable than fluorescein.

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Reactive Blue 4, Dye content 35 % (1-Amino-4-[3-(4,6-dichlorotriazin-2-ylamino)-4-sulfophenylamino]anthraquinone-2-sulfonic acid; Procion(R) blue MX-R)

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Fluorescent molecular rotor

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Mixture of crystal violet [C.I.No. 42555] and methyl violet [C.I.No. 42535]. Dye employed for preparing Gram stain.

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Sunset yellow FCF is a food dye, which is is substantially used in various food preparations. It is a orange-red coloured crystal, that is soluble in water and ethanol. It is used in treating bone metabolic diseases, dermatological disorders, respiratory illness etc. It can alter the functional responses of splenocytes at non-cytotoxic dose. It promotes immune suppression. Relative expression of surface receptors in T and B cells can be altered by sunset yellow FCF.

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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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Naphthol AS-BI Phosphoric acid solution for use in the Sigma Lymphocyte Enzyme (Acid Phosphatase) Procedure, No. 181A.

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Erythrosin B dinatriumsalt, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Jenner's stain,certified by the Biological Stain Commission (Jenner Stain; Eosin-Methylene Blue)