EM Reagents

17 Item(s)

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  1. Colchicine


    Starting at: $81.00

    An antimicrotubular effector. Interferes with microtubule organization by binding specifically with tubulin. Used for research in plant genetics.

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  2. Phosphotungstic Acid hydrate

    Phosphotungstic Acid hydrate

    Starting at: $86.00

    Negative Stain, EN Bloc Stain.

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  3. Formvar 15/95 (Poly[vinyl formal])

    Formvar 15/95 (Poly[vinyl formal])

    Starting at: $91.00

    Powder used to make support films on E.M. grids for fragile samples. Polymer contains cyclic acetal units, some residual hydroxyl groups.

    Hydroxyl content 5.0-6.5%; acetate 9.5-13.0 Formal 82%

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  4. Lead Citrate, Powdered Fines Grade (< 5 µm)

    Lead Citrate, Powdered Fines Grade (< 5 µm)

    Starting at: $121.00

    The most popular lead stain for EM applications. Carbonate free material.

    Particle Size: >90% particle size is less than ca. 5 µm

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  5. Pyroxylin, 23% solids solution in ethyl acetate

    Pyroxylin, 23% solids solution in ethyl acetate

    Starting at: $135.00

    Used for making thin films for support grids.

    Celloidin; Nitrocellulose; Parlodion; Collodion

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  6. ERL-4221 (3,4-Epoxycyclohexanemethyl 3,4-epoxycyclohexanecarboxylate)

    ERL-4221 (3,4-Epoxycyclohexanemethyl 3,4-epoxycyclohexanecarboxylate)

    Starting at: $72.00

    ERL-4221 is a cycloaliphatic, diepoxy functional organic compound that is a useful building block in the production of semi-hard to hard cured epoxy resins. It is incompatible with amines, acids and strong bases and will cure to form a resinous product. ERL-4221 is often used in manufacture of plastic embedding kits for electron microscopy. Learn More

  7. Lead (II) Nitrate, 99% (ACS Reagent)

    Lead (II) Nitrate, 99% (ACS Reagent)

    Starting at: $323.00

    Used by Reynolds to make Lead Citrate, carbonate free.

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  8. Chloroauric acid

    Chloroauric acid

    Starting at: $301.00

    Used for production of colloidal gold sols.

    Gold trichloride acid trihydrate; Hydrochloroauric acid trihydrate

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  9. Ruthenium hexammine trichloride

    Ruthenium hexammine trichloride

    Starting at: $291.00

    Electron microscopy stain.

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  10. Uranyl Acetate 98%, ACS Reagent

    Uranyl Acetate 98%, ACS Reagent

    Starting at: $197.00

    Uranyl acetate improves tissue penetration and contrast without affecting immunolabeling. Useful as positive or negative stain for thin sections.

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  11. Blue Platinum EM Stain

    Blue Platinum EM Stain

    Starting at: $199.00

    An EM stain that can replace uranyl acetate in many cases tor staining TEM thin sections. An excellent alternative to uranyl acetate in your lab cannot use radioactive compounds.

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  12. Nonenyl Succinic Anhydride (NSA), EM Grade

    Nonenyl Succinic Anhydride (NSA), EM Grade

    Starting at: $76.00

    Liquid anhydride for curing low viscosity embedding resin for E.M., particularly used in Spurr formulations. Our material is specially distilled for E.M. applications and was developed in conjunction with Dr. Spurr.

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  13. Uranyl Formate

    Uranyl Formate

    Starting at: $236.00

    Electron dense, heavy metal compounds of uranium, tungsten and molybdenum have long been utilized for "negative staining" in electron microscopy. As demand for ultra-fine structure in biomolecules has increased, new fine grain structure materials are required.

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  14. Nitroblue tetrazolium chloride (NBT)

    Nitroblue tetrazolium chloride (NBT)

    Starting at: $120.00

    Used for estimating dehydrogenases and other oxidases. Also used in the detection of nucleic acid hybridization and in the detection of ascorbate peroxidase activity in native gels.

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  15. Multiple Stain Solution | Polysciences, Inc.

    Multiple Stain Solution

    Starting at: $35.00

    Used in Tzanck preparations of herpetic lesions and to differentiate acidophilic and basophilic structures. Stain can be directly applied to frozen sections, epoxy or JB-4® embedded sections and utilized as a general cytoplasmic and nuclear stain. Learn More

  16. Thiocarbohydrazide


    Starting at: $96.00

    Useful for the histochemical and ultracytochemical demonstration of glycomacro-molecules. Also useful for the enhancement of the fine structure of cytomembranes by osmium-thiocarbohydrazide bridging.

    Carbonothioic dihydrazide; Thiocarbazide

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  17. Neutral red, C.I. 50040, certified

    Neutral red, C.I. 50040, certified

    Starting at: $71.00

    Used as an indicator. pH range 6.8 (red)-8.0 (yellow). Also used as a biological stain.

    (Basic red 5; 3-Amino-7-dimethylamino-2-methylphenazine hydrochloride; Toluylene red) λ max 540nm

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