Find the best protein standards for SDS-PAGE, western blotting, 2-D electrophoresis, and other applications.
Prestained standards enable quick visual assessment during electrophoresis and transfer.
Unstained protein ladders are optimized for Coomassie and zinc staining.
Use these standards for both fluorescent visualization and colorimetric or chemiluminescent immunodetection on western blots.
IEF and 2-D standards allow dependable and reproducible pI and MW calibration in native polyacrylamide or agarose gels.
Precision Plus Protein™Dual Color Standards
Prestained protein standards have the same gel migration patterns, with three high-intensity reference bands (25, 50, and 75 kD), and provide exceptional lot-to-lot molecular weight consistency.
Prestained natural protein standards for SDS-PAGE and western blotting provide a quick and easy way to monitor protein separation during electrophoresis and to assess transfer efficiency on blots. Each lot of prestained protein standards is individually calibrated for estimating the MW of sample proteins.
Important InformationPrestained Natural Protein Standards will soon be phased out. We recommend the Precision Plus Protein Prestained Recombinant Protein Standards above as replacements.
* Recommended for use with Bio-Rad's TGX Stain-Free™ Precast Gels and TGX Stain-Free™ FastCast™ Acrylamide handcast gels.
Western blotting protein standards can be used for both fluorescent visualization and colormetric or chemiluminescent immunodetection on western blots. Precision Plus Protein™ WesternC™ Standards are combination protein standards containing ten prestained, Strep-tagged recombinant proteins, enabling both fluorescent visualization on gels and colorimetric or chemiluminescent western blot detection with StrepTactin-AP or StrepTactin-HRP Conjugate.
* 2-D standards: use 2.5 µl per mini gel for Coomassie staining (200 applications) or 0.5–2.5 µl for silver staining (up to 1,000 applications); use 1.0–5.0 µl for full-length gels (16–20 cm) to yield 100 or up to 500 applications, respectively.IEF standards: use 5 µl per mini gel for Coomassie staining or 0.5 µl for silver staining to yield 50 or 500 applications, respectively.
Protein Standards Selection GuideFor quick guidance on choosing the best standard for your application.
Little Book of StandardsComplete reference information for all of Bio-Rad’s protein standards and nucleic acid standards
Electrophoresis GuideTheory and techniques, Bio-Rad products, tips and troubleshooting.
Protein Blotting GuideDetails on blotting technology, available products, and tips and techniques.
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