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Catalog Number: (220947S)
Supplier: VWR Chemicals
Description: Biuret reagent solution for protein (total) in serum or plasma
UOM: 1 * 5 L

Catalog Number: (87787.290)
Supplier: VWR Chemicals
Description: Biuret reagent solution Reag. Ph. Eur.
UOM: 1 * 1 L

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Consistency-Accuracy-Speed-Efficiency

C.A.S.E.
Catalog Number: (1.10307.0500)
Supplier: Merck
Description: Test kit, Protein (Biuret Method at 546 nm), reagent solution for approx. 250 determinations
UOM: 1 * 500 mL

Supplier: SIGMA-ALDRICH MICROSCOPY
Description: Folin & Ciocalteu's phenol reagent is most commonly used in the Lowry method for determining protein concentration. It has also been used for the quantification of total phenolics. In this method, protein is pretreated with copper(II) in a modified biuret reagent (alkaline copper solution
stabilized with sodium potassium tartrate). Addition of the phenol reagent generates chromogens that give increasing absorbance between 550-750nm. Normally, absorbance at the peak (750 nm) or shoulder (660 nm) are used to quantitate protein concentrations between 1 - 100 mg/ml while absorbance at 550 nm is used to quantitate higher protein concentrations.

Catalog Number: (ICNA0855730)
Supplier: MP Biomedicals
Description: The complement system provides innate defense against microbial infection and is a "complement" to antibody mediated immunity. The complement system consists of thirty five interacting plasma and membrane associated proteins which contribute to host-defense and initiate and amplify inflammation, even in the preimmune state where specific antibodies and lymphocytes are not available. In addition to the complement components themselves, this system also contains several soluble factors that prevent spontaneous complement activation from occurring in solution, as well as, several regulatory membrane associated proteins that protect host cells from accidental complement attack. Cleavage of the C3 component by either the classical pathway or the alternative pathway releases C3a and C3b. C3a appears to be important in many inflammatory responses while the C3b fragment covalently binds to the cell or bacterial surface and plays a role in opsonisation. Binding of C3b to the C4b component of the C3 convertase, results in C5 convertase (C4b3b2a) formation

The total protein is measured using the Biuret procedure, with bovine albumin as a standard. Antibody titer is standardized to an in-house standard by equivalence-point precipitation. Each IgG fraction is tested for purity and specificity at a minimum of 40 mg/mL using immunoelectrophoresis. The product is mostly goat IgG; no trace of albumin is detected.

This product is suitable for use as a primary reagent in enzyme immunoassays, fluorescein immunoassays and blot, cell or tissue immunostaining. Note: F(ab')2 fragments are recommended for staining of cells or tissues which contain Fc receptors. The product has been successfully used in Immunoblotting. It detects C3 from human, equine, hamster, Guinea pig, murine, rabbit, rat, pig, and non-human primate samples. It does not cross react wtih bovine, canine, chicken, feline and sheep samples. It has been successfully used in immunocytochemistry, Western blot, Immunoelectrophoresis, and flow cytometry applications. It detects C3 from human, equine, hamster, Guinea pig, murine, rabbit, rat, pig, and non-human primate samples. It does not cross react wtih bovine, canine, chicken, feline and sheep samples. It has been successfully used in immunocytochemistry, Western blot, Immunoelectrophoresis, and flow cytometry applications.
UOM: 1 * 2 mL


Supplier: G-Biosciences
Description: Determination of protein concentration is an essential technique in all aspects of protein studies and proteomics. The Assays for Protein Quantification kit includes three of the most widely used protein assays and allows for a direct comparison of the three assays that teaches students the benefits and limitations of each assay. Each assay is available individually to allow teaching of a specific assay, without the option of comparing and contrasting with other assays. The three assays covered are the Biuret Protein Assay, Lowry Protein Assay and the Coomassie Blue Dye Protein Assay. The Assays for Protein Quantification kit provides all the reagents required to perform both protein assays, including protein standards for accurate quantification, in a single lab activity. An often underestimated factor in quantifying protein is the presence of non-protein interfering agents, such as salts and detergents. This kit teaches students about common laboratory agents that affect the protein assays, the reasoning behind their interferences and how to overcome the interference. Students also learn how to select a protein assay for different applications.

Catalog Number: (ICNA0855317)
Supplier: MP Biomedicals
Description: Product is the lyophilized powder of goat antiserum to dog serum and buffer salts

The total protein is measured using the Biuret procedure, with bovine albumin as a standard. Antibody titer is standardized with an in-house control by immunoelectrophoresis. Each antiserum is tested for specificity at a minimum of 80 mg/ml using immunoelectrophoresis. It shows reactivity to dog serum; cross-reactivity to other species may exist.

Applications: Immunostaining of cell suspensions, acetone-fixed frozen tissue sections, and formalin-fixed, paraffin-embedded tissue sections.

Warning and Caution:This product contains sodium azide. To prevent formation of toxic vapors, do not mix with strongly acidic solutions. To prevent formation of potentially explosive metallic azides in metal plumbing, always wash into drain with copious quantities of water
UOM: 1 * 2 mL


Supplier: Thermo Scientific
Description: Biuret 97%, Extra Pure
Catalog Number: (ICNA0855800)
Supplier: MP Biomedicals
Description: Product is the lyophilized powder of rabbit antiserum to sheep red blood cells and buffer salts.

The total protein is measured using the Biuret procedure, with bovine albumin as a standard. Hemagglutination titer is standardized with an in-house control by measurement of agglutination end-point with 10% sheep red blood cells.

Warning and caution: This product contains sodium azide. To prevent formation of toxic vapors, do not mix with strongly acidic solutions. To prevent formation of potentially explosive metallic azides in metal plumbing, always wash into drain with copious quantities of water.
UOM: 1 * 2 mL


Catalog Number: (ICNA0855444)
Supplier: MP Biomedicals
Description: The complement system provides innate defense against microbial infection and is a "complement" to antibody mediated immunity. The complement system consists of thirty-five interacting plasma and membrane associated proteins which contribute to host-defense and initiate and amplify inflammation, even in the preimmune state where specific antibodies and lymphocytes are not available. In addition to the complement components themselves, this system also contains several soluble factors that prevent spontaneous complement activation from occurring in solution, as well as, several regulatory membrane associated proteins that protect host cells from accidental complement attack. Cleavage of the C3 component by either the classical pathway or the alternative pathway releases C3a and C3b. C3a appears to be important in many inflammatory responses while the C3b fragment covalently binds to the cell or bacterial surface and plays a role in opsonisation. Binding of C3b to the C4b component of the C3 convertase, results in C5 convertase (C4b3b2a) formation.

The total protein is measured using the Biuret procedure, with bovine albumin as a standard. Antibody titer is standardized by equivalence-point precipitation. Each antiserum is tested for specificity at a minimum of 80 mg/mL using immunoelectrophoresis; Antibody activity to other serum proteins is not present.
UOM: 1 * 2 mL


Supplier: Thermo Scientific
Description: Biuret 97%
Catalog Number: (ICNA0855136)
Supplier: MP Biomedicals
Description: The antiserum is prepared by hyperimmunizing goats with human serum. The resulting antiserum is delipidated and dialyzed into 0.02M sodium phosphate, 0.14M sodium chloride, pH 7.3, with 0.05% sodium azide, adjusted to standard titer, filtered through a 0.22 µm filter, vialed and lyophilized.

The total protein is measured using the Biuret procedure, with bovine albumin as a standard. Antibody titer is standardized with an in-house control by immunoelectrophoresis. Each antiserum is tested for specificity at a minimum of 80 mg/ml using immunoelectrophoresis. It shows reactivity to human serum; cross-reactivity to other species may exist.

Reconstitute product with 2.0 ml of deionized or distilled water. Gentle swirling may be used to speed rehydration. Avoid vigorous shaking of the reconstituted material.

Store lyophilized product at 2-8°C. Store reconstituted material no longer than 4 weeks at 2-8°C. For long-term storage, aliquot
and freeze reconstituted product at -20°C or lower.

Warning and Caution: This product contains sodium azide. To prevent formation of toxic vapors, do not mix with strongly acidic solutions. To prevent formation of potentially explosive metallic azides in metal plumbing, always wash into drain with copious quantities of water.
UOM: 1 * 2 mL


Catalog Number: (ICNA0855385)
Supplier: MP Biomedicals
Description: The complement system provides innate defense against microbial infection and is a "complement" to antibody mediated immunity. The complement system consists of thirty-five interacting plasma and membrane associated proteins which contribute to host-defense and initiate and amplify inflammation, even in the preimmune state where specific antibodies and lymphocytes are not available. In addition to the complement components themselves, this system also contains several soluble factors that prevent spontaneous complement activation from occurring in solution, as well as, several regulatory membrane associated proteins that protect host cells from accidental complement attack. Cleavage of the C3 component by either the classical pathway or the alternative pathway releases C3a and C3b. C3a appears to be important in many inflammatory responses while the C3b fragment covalently binds to the cell or bacterial surface and plays a role in opsonisation. Binding of C3b to the C4b component of the C3 convertase, results in C5 convertase (C4b3b2a) formation.

The total protein is measured using the Biuret procedure with bovine albumin as the standard; F/P ratio is calculated using absorbance at 491.5nm. Antibody titer of the IgG fraction is standardized with an in-house control by immunoelectrophoresis. The IgG fraction is tested for purity and specificity at 40 mg/mL using immunoelectrophoresis; No trace of albumin is detected. Antibody activity to serum albumin is not present.
UOM: 1 * 2 mL


Catalog Number: (MOLE12779060-100G)
Supplier: Molekula
Description: Biuret
UOM: 1 * 100 g

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Catalog Number: (31115.267)
Supplier: VWR Chemicals
Description: Schweitzer's reagent (Tetraamminecopper(II) dihydroxide solution, Shirley's solution) for cellulose dissolution
UOM: 1 * 500 mL

Supplier: VWR Chemicals
Description: Ammonia solution 25%, AnalaR NORMAPUR® analytical reagent
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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.
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
-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
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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