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Supplier: SIGMA-ALDRICH MICROSCOPY
Description: 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.

Catalog Number: (75633-2ML)
Supplier: SIGMA-ALDRICH MICROSCOPY
Description: Osmium tetroxide solution has been used as a fixative in electron microscopy.
UOM: 1 * 2 mL


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Supplier: SIGMA-ALDRICH MICROSCOPY
Description: 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.

Catalog Number: (429081000.)
Supplier: Thermo Scientific
Description: Osmium tetraoxide 2,5% (w/w) in tert-butanol stabilised, AcroSeal®
UOM: 1 * 100 mL

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Supplier: Thermo Scientific
Description: Osmium tetraoxide 2,5% (w/w) in tert-butanol stabilised
Supplier: Thermo Scientific
Description: Osmium tetraoxide 2% in aqueous solution
Supplier: Thermo Scientific
Description: Osmic acid 4% in aqueous solution
Supplier: Thermo Scientific
Description: Osmic acid 4% (w/w) in water
Supplier: Thermo Scientific
Description: Osmic acid 99.9+% (trace metals basis)
Supplier: Thermo Scientific
Description: Osmic acid 99.8% (≥74.4% Os) (metals basis)
Catalog Number: (MOLE11841630-1G)
Supplier: Molekula
Description: Osmium tetraoxide
UOM: 1 * 1 g

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR Regulatory Department at eurega_services@eu.vwr.com
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This product has been blocked by your organisation. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
Product(s) marked with this symbol are discontinued - sold till end of stock. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service on +353 1 8822222.
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