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Tetrossido di osmio per microscopia, Sigma-Aldrich®

Codice catalogo: (1.24505.0000)

Fornitore: Merck

Codice articolo fornitore: 1.24505.0000

Codice articolo locale: MERC1.24505.0000

Descrizione: Osmium tetroxide for microscopy can be used to visualize unsaturated lipids. A part of the lipids is immediately blackened by the influence of osmic acid solution. The immediate black coloration results from the -C=C- double bond of the unsaturated fatty acid. The fatty acids that are made brownish at first can be blackened by treatment with 60-70% alcohol.

UOM: 1 * 1 g

MSDS Promo

Non disponibile confezione

Tetrossido di osmio 4% in soluzione acquosa, Sigma-Aldrich®

Fornitore: SIGMA ALDRICH MICROSCOPY

Descrizione: 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.

Osmium standard solution, for ICP, in 20% HCl, VHG

Fornitore: LGC Standards PROMOCHEM

Descrizione: These solutions are intended for use as a certified reference material or calibration standard for inductively coupled plasma optical emission spectroscopy (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), flame or furnace atomic absorption spectroscopy (AA or GFAA), x-ray fluorescence spectroscopy (XRF), and other techniques for elemental analysis.

Tetrossido di osmio Sealed ampule, Sigma-Aldrich®

Fornitore: SIGMA ALDRICH MICROSCOPY

Descrizione: 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.