Thermo Scientific™ Pierce™ Prestained Protein Molecular Weight Marker

A mixture of six blue-stained natural proteins (20 to 120kDa) for use as size standards in protein electrophoresis (SDS-PAGE).

Brand: Thermo Scientific™

Manufacturer Part Number: 26612

500 UL FERMENTAS PRESTAINED PROTEIN MOLECULARweight marker (SM0441), 6 bands (approx. 20,25,

UNSPSC: 41105337

Code: PN

Additional Details:
Additional Details: Weight: 1.00000kg

Product Code. 11583100

Quantity Price
1 £44.00 / Each
EU Stock 90
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Description and Specification


Description Pierce Prestained Protein Molecular Weight Marker
Detection Visible
Formulation 6 proteins from 20 to 120kDa in reducing sample buffer
Quantity 500μL
Separation Range Mid
Stained Unstained
Sufficient For 50 to 100 mini gel lanes at 5 to 10μL 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.


  • Size range – six proteins spanning 20 to 120kDa

  • Ready-to-use – supplied in a loading buffer for direct loading on gels

  • Prestained – for direct viewing during electrophoresis

  • Quality tested – each lot evaluated by SDS-PAGE and Western blotting


Dye-stained proteins in 62.5mM Tris-HCl (pH 7.5 at 25°C), 1mM EDTA, 2% SDS, 10mM DTT, 1.5mM NaN3 and 33% glycerol; Component proteins: beta-galactosidase (120kDa), bovine serum albumin (85kDa), ovalbumin (50kDa), cardonic anhydrase (35kDa), beta-lactoglobulin (25kDa), lysozyme (20kDa)

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