Thermo Scientific™ Spectra™ Multicolor Broad Range Protein Ladder

A 4-color protein standard containing 10 prestained proteins (10 to 260kDa) for use as size standards in gel electrophoresis and Western blotting.

Brand: Thermo Scientific™

Manufacturer Part Number: 26623

X10 Spectra(TM) Multicolor Broad Range

UNSPSC: 41105337

Code: PN

Additional Details:
Additional Details: Weight: 0.01000kg

Product Code. 11862124

Quantity Price
1 £502.00 / Pack of 10
EU Stock 33
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Description and Specification


Description Spectra Multicolor Broad Range Protein Ladder
Detection Visible
Formulation 10 proteins from 10 to 260kDa in reducing sample buffer
Quantity 10 x 250┬ÁL
Separation Range Broad
Stained Prestained
Sufficient For 125 to 250 mini gel lanes at 10 to 20uL per lane

This prestained protein MW marker is designed for monitoring the progress of SDS-polyacrylamide gel electrophoresis, for assessing transfer efficiency onto PVDF, nylon and nitrocellulose membranes, and for estimating the approximate size of separated proteins that have been made visible with gel stains or Western blot detection reagents. Four different chromophores (blue, orange, green, pink) are bound to the different component proteins, producing a brightly colored ladder with an easy-to-remember pattern.


  • Size range – 10 proteins spanning 10 to 260kDa

  • Multicolor – four different colors for unambiguous band-size assignment
  • Ready-to-use – supplied in a loading buffer for direct loading on gels; no need to boil
  • Sharp bands – color-coded bands of similar intensity for easy visualization
  • Quality tested – each lot evaluated by SDS-PAGE and Western blotting
  • Membrane-compatible – colored bands transfer to membranes for Western blotting


Dye-stained proteins in 62.5mM Tris-H3PO4 (pH 7.5 at 25°C), 1mM EDTA, 2% SDS, 10mM DTT, 1mM NaN3 and 33% glycerol.

Recommended for:

Monitoring protein migration during SDS-polyacrylamide gel electrophoresis; Monitoring protein transfer onto membranes after Western blotting; Sizing of proteins on SDS-polyacrylamide gels and Western blots