Thermo Scientific Spectra Multicolor Low Range Protein Ladder is a mixture of six proteins and synthetic peptides (1,7 to 40 kDa) for use as size standards for peptides and small proteins in gel electrophoresis and western blotting.

• Monitoring of protein migration during SDS-PAGE
• Verifying western transfer efficiency
• Approximate sizing of proteins on SDS-polyacrylamide gels and western blots
• Locating a protein of interest for excision from an unstained preparative gel

The protein standard is supplied in a ready-to-use format for direct loading onto gels; no need to heat, reduce, or add sample buffer prior to use.