378 Resultater for: "VARLP080520VARI00001"

Supplier: Merck

Developed specifically for the safe and simple removal of ethidium bromide (EtBr) from aqueous staining solutions and running buffers used in nucleic acid separation gels.

Supplier: SIGMA ALDRICH MICROSCOPY

Fast black K (C.l. 37190) is a lipophilic amino-substituted monoazo dye. It is also known as Brentamine fast black K salt.

Supplier: SIGMA ALDRICH MICROSCOPY

Sodium 3,5-dichloro-2-hydroxybenzenesulfonate is used in conjunction with 4-aminoantipyrine (4-AAP) and hydrogen peroxide (H2O2) for chromogenic quantitation of uric acid in serum and urine samples.

Supplier: SIGMA ALDRICH MICROSCOPY

Solvent Green 3, also known as Quinizarine Green SS (CI 61565) is an anthraquinone derivative. It is a green dye that imparts its colour to materials. Solvent Green 3 is made by condensing either leucoquinizarin or a mixture of leucoquinizarin and quinizarin with two moles of p-toluidine in the presence of boric acid.

Supplier: SIGMA ALDRICH MICROSCOPY

Nitro Blue Tetrazolium is a tetrazole compound with two tetrazole rings.

Supplier: SIGMA ALDRICH MICROSCOPY

Direct Red 80 (C.I. 35780) is an extremely hydrophilic, very large tetrakisazo hexasulfonated anionic dye that has a large, planar aromatic system.It is also known as Sirius red F3B, chlorantine fast red 7BLN or 5BRL, durazol brilliant red B, pontamine fast red 7BNL, and sirius fast red.

Supplier: Merck

The Giemsa’s Azure Eosin Methylene Blue solution can be used for the staining of blood and bone marrow smears, paraffin sections and clinical-cytological specimens.

Supplier: SIGMA ALDRICH MICROSCOPY

Chromotrope 2R has been used in the Gomori trichrome staining in osteochondral tissues. It has also been used for the staining of eosinophils in lung sections. Chromotrope 2R is used for the staining of microsporidia in body fluids and stool samples. It is used in modified Gomori′s trichrome staining. Chromotrope 2R has high affinity for phospholipids and is used for the staining of mitochondrial and endoplasmic reticulum membrane in histological samples.

Supplier: SIGMA ALDRICH MICROSCOPY

Methyl orange (C.I. 13025) is the sodium salt of p-dimethylaminoazobenzenesulfonic acid. It is an orange-colored synthetic dye, which changes color depending on the pH of the solution. It develops a red color in acidic solution and yellow color in basic solution.

Supplier: Merck

For use in hematology and clinical cytology

Supplier: SIGMA ALDRICH MICROSCOPY

5-Fluorouracil has been used to induce apoptosis in cells. It has been used as a chemosensitising agent. A potent antitumor agent that affects pyrimidine synthesis by inhibiting thymidylate synthetase, thus depleting intracellular dTTP pools. It is metabolized to ribonucleotides and deoxyribonucleotides, which can be incorporated into RNA and DNA. Treatment of cells with 5-FU leads to an accumulation of cells in S-phase and has been shown to induce p53 dependent apoptosis.

Supplier: SIGMA ALDRICH MICROSCOPY

Phenol Red is a phenolsulfonphthalein compound. It is present as a sulfonated hydroxyquinone in weakly acidic aqueous solutions. In alkaline solutions, the dye forms a hydrophilic dianion (a small, red anion and has a larger conjugated system than the yellow hydroxyquinone).

Supplier: SIGMA ALDRICH MICROSCOPY

Leishman stain is a Romanowsky-type dye, similar to Wright stain. Leishman stain is used in hematology and tropical medicine to differentiate and identify leukocytes, malarial parasites, and trypanosomes. It is also known as eosin-polychrome methylene blue.

Supplier: SIGMA ALDRICH MICROSCOPY

Methyl Blue is a triaminotriphenylmethane dye, widely used in paper, textile and leather production.

Supplier: SIGMA ALDRICH MICROSCOPY

Bathophenanthrolinedisulfonic acid disodium salt hydrate has been used to measure iron to determine the solubility of iron in the biological sample. It has been used as an iron chelator to grow plants without Fe-EDTA (ethylenediaminetetraacetic acid).

Supplier: Merck

Haematoxylin solution modified acc. to Gill III

Supplier: SIGMA ALDRICH MICROSCOPY

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.

Supplier: SIGMA ALDRICH MICROSCOPY

Crystal violet has been used to determine cell viability. It has been used in the staining of cells for the quantification of cellular migration.

Supplier: Merck

The hematoxylin and eosin (H&E) staining method is the method most frequently used for the staining of histology material of human origin.

Supplier: Merck

For staining of blood and bone marrow smears and clinical-cytological specimens

Supplier: SIGMA ALDRICH MICROSCOPY

Ponceau S (C.l. 27195) is an anionic, very hydrophilic disazo dye. It is also known as fast ponceau 2B. Ponceau S is widely used to stain proteins on gel electropherograms. It is a suitable stain for proteins adsorbed onto nitrocellulose membranes. It also has applications in botanical staining manuals as a stain for sieve plate elements.

Supplier: SIGMA ALDRICH MICROSCOPY

Osmium tetroxide (OsO₄) is a heavy tetrahedral, symmetrical molecule composed of osmium, a third-row transition metal. Osmium tetroxide is both a dye, and a non-coagulant fixative agent in electron microscopy primarily used for the examination of biological tissue components in the histopathology laboratory. Specimens are postfixed with osmium testroxide to ensure preservation of the lipids.

Supplier: SIGMA ALDRICH MICROSCOPY

2-Hydroxy-1,4-naphthoquinone is one among the forensic reagents used for fingerprint detection. 2-Hydroxy-1,4-naphthoquinone, produced from Lawsonia inermis, is an orange dye. It belongs to the class of naphthoquinone dyes. 2-Hydroxy-1,4-naphthoquinone is used to dye hair and to color textiles. It has antibacterial, antifungal, anti-inflammatory, antiviral and antineoplastic properties. 2-Hydroxy-1,4-naphthoquinone inhibits tumor cell growth. It stimulates the production of reactive oxygen species (ROS).

Supplier: SIGMA ALDRICH MICROSCOPY

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

Supplier: Merck

The Gram staining allows a fast differentiation of bacteria in Gram-positive and Gram-negative.

Supplier: SIGMA ALDRICH MICROSCOPY

1,3-Dihydroxynaphthalene is a dye intermediate forming stable colors when applied with particular mordants and in mixtures with other oxidising dyes. This specific reagent is intended for the quantitative colorimetric determination of alduronic acids, such as glucuronic acid from urine. The mutagenicity of ozonation derivatives of 1,3-dihydroxynaphthalene against several Salmonella typhimurium strains has been studied.

Supplier: SIGMA ALDRICH MICROSCOPY

2,3-Diaminonaphthalene is also known as 2,3-Naphthalenediamine or DAN. It is one of the isomers of naphthalene bearing two amino groups, which are also called naphthalenediamines. They are usually prepared by reducing the nitronaphthalene derivative and aminating the subsequent hydroxynaphthalene derivative.

Supplier: SIGMA ALDRICH MICROSCOPY

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

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

Supplier: SIGMA ALDRICH MICROSCOPY

Aurintricarboxylic acid ammonium salt has been used as a nuclease inhibitor to study its effects on transfection.