Thermo Scientific™

EZ-Link™ Plus Activated Peroxidase Kit

Catalog number: 31489
Thermo Scientific™

EZ-Link™ Plus Activated Peroxidase Kit

Catalog number: 31489
Catalog Number
Unit Size
5 reactions
Price (USD)
Catalog NumberUnit SizePrice (USD)AvailabilityQuantity
314895 reactions
Product Overview
Citations & References
Additional Information
Thermo Scientific Pierce Plus Activated Peroxidase is an amine-reactive form of horseradish peroxidase (HRP) that provides coupling efficiencies of greater than 95% with antibodies and other proteins. Each kit contains 5 x 1 mg of lyophilized HRP and sufficient Sodium cyanoborohydride solution, quenching buffer, and buffers to conjugate 5 mg of Immunoglobulin (IgG)

Features of the Thermo Scientific Pierce Plus Activated Peroxidase Kit:

Activated HRP – periodate-treated, aldehyde-activated horseradish peroxidase, ready for conjugation to antibodies and other proteins at sites of primary amines (e.g., lysines)
Permanent conjugation – reacts efficiently (95%) with primary amines to form covalent amide bonds upon treatment with sodium cyanoborohydride (included in kit)
High activity HRP – enzyme activity is 120 to 200 units/mg; lyophilized, activated enzyme is stable for at least 12 months at -20°C
Convenient quantities – each 1 mg-quantity of activated enzyme is sufficient for reaction with 1 mg of IgG to produce about 0.5 mL of conjugate
Customizable – vary the molar ratios, reaction buffer and pH, and other parameters to acheive conjugates with different levels of HRP incorporation and activity

Plus Activated Peroxidase is horseradish peroxidase (HRP) enzyme, whose native carbohydrates (sugars) have been gently oxidized with periodate to produce amine-reactive aldehyde groups. These carbonyls of Plus Activated Peroxidase spontaneously and efficiently crosslink with primary amines on antibody or other proteins. The method is more effective than other amine-reactive chemistries, such as glutaraldehyde coupling, which often causes polymerization and a greater degree of conjugate inactivation. The pre-activated enzyme eliminates the difficulties inherent in preparing and validating activated peroxidase from scratch. The kit provides the enzyme, accessory reagents and protocol to easily produce high-performance conjugates for Western blotting, ELISA and other detection techniques.

Related Products
EZ-Link™ Plus Activated Peroxidase
For Research Use Only. Not for use in diagnostic procedures.


1-plate kit
Product Line
Sufficient For
5 Enzyme Labeling Reactions
Labeling Target
Antibodies (General), Proteins (General)
Label or Dye
HRP (Horseradish Peroxidase)
Labeling Scale
0.5-1 mg

Contents & Storage

Sufficient For: 5 enzyme-labeling reactions, each with up to 1 mg of antibody (IgG)
• Plus Activated Peroxidase, 5 x 1 mg
• Sodium cyanoborohydride solution, 1 x 0.5 mL
• Quenching Buffer, 25 mL
• PBS Pack (makes 500 mL), 1 pack
• Carbonate-Bicarbonate Buffer Pack (makes 500 mL), 1 pack

Store at -20°C.


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