ELISA Reagents and Buffers
The Alkaline Phosphatase is purified from calf intestine by a method developed in our laboratories, involving affinity chromatography. This enzyme is widely used as a marker enzyme in applications such as: • ELISA Immunoblotting Immunohistochemistry Molecular Biology Activity: >630 U*/mg enzyme protein (25°C, 4-nitrophenyl phosphate, glycine as buffer) • Unit definition: That amount of enzyme causing the hydrolysis of one mi…
The WellChampion™ preserves and protects biological activity of proteins and other biomolecules coated and dried on microwell surfaces. The protection of the coated and dried surface prevents degradation, denaturation and leaching. The WellChampion™ also efficiently blocks any free binding sites left on the microwell surface after coating, and a separate blocking step is avoided. Simply coat the microwell plate with the biomol…
The protein-free Blocking Buffer is a ready-to-use solution intended for blocking of the remaining free binding sites after microplate coating. The blocking is highly effective and stable. Our Synthetic Blocking Buffer™ eliminates the risk of false positive cross reactions in the assay. Current safety hazards related to the use of bovine material, for instance BSA are avoided. The buffer is ready-to-use and offers a high level…
OPD, Ortho-Phenylenediamine, is used as a chromogen substrate in ELISA procedures with an absorption maximum at 492 nm and produces a yellow colour during the enzymatic degradation of hydrogen peroxide by horseradish peroxidase. After addition of sulfuric acid you will obtain a very stable end solution. The fizzing, buffer containing tablets are dissolved in distilled water within few minutes. This will give solution of pH 5.2…
OPD, Ortho-Phenylenediamine, is used as a chromogen substrate in ELISA procedures with an absorption maximum at 492 nm and produces a yellow colour during the enzymatic degradation of hydrogen peroxide by horseradish peroxidase. After addition of sulfuric acid you will obtain a very stable end solution. The fizzing, buffer containing tablets are dissolved in distilled water within few minutes. This will give solution of pH 5.2…
OPD is used as a chromogen substrate in ELISA procedures with an absorption maximum at 492 nm and produces a yellow colour during the enzymatic degradation of hydrogen peroxide by horseradish peroxidase. After addition of sulfuric acid you will obtain a very stable end solution. Stability life time is 18 months at 4°C. Our standard tablets are available with a content of 2 mg or 10 mg OPD.
DAB (3,3-diaminobenzidine tetrahydrochloride), is used as a chromogen substrate in immunoblotting.DAB produces a brown colour during the enzymatic degradation of H2SO4 by horseradish peroxidase. Each tablet contains 10 mg of DAB and dissolves in distilled water in less than 5 minutes. Stability life time is 18 months at 4°C.
Fast Red is used as a chromogen substrate in immunoblotting and immunohistochemistry using alkaline phosphatase antibody conjugates. Each tablet contains 0.5 mg naphthol phosphate, 2 mg FAST RED chromogen and 0.4 mg levamisole, an inhibitor of endogenous enzyme activity. Stability life time is 18 months at 4°C.
The pNPP (p-NitroPhenyl Phosphate) liquid, ready-to-use substrate is a highly active and stable formulation utilized for measuring AP- (Alkaline Phosphatase) probe activity. The solution is a solvent free buffer solution containing stabilized pNPP using sodium azide as preservative. In kinetic assays p-nitrophenol appears yellow and is measured at 405 /650 nm. If stopped reactions are preferred, add equal amounts of 1 .0 M s…
The liquid BCIP/NBT is the most commonly used substrate for colorimetric determination of Alkaline Phosphatase (AP) activity in membrane tests. We offer an aqueous buffered solution containing NBT (NitroBlue Tetrazolium) and BCIP (Bromo-Chloro-Indolyl Phosphate) forming a blue/purple precipitate at the positive sites. The colour develops when AP catalyses the dephosphorylation of BCIP. The intense blue/purple precipitate is…
