Thermo Scientific™ PageRuler™ Plus Prestained 10-250kDa Protein Ladder

Mixture of 9 blue-, orange- and green-stained proteins (10 to 250kDa) used as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.

Brand: Thermo Scientific™

Manufacturer Part Number: 26619

UNSPSC: 41105337

Code: PN

Additional Details:
Additional Details: Weight: 1.36080kg

Product Code. 11832124

Quantity Price
1 £ 110.0 / Pack of 2
EU Stock 621
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Description and Specification


Sufficient For 50 to 100 mini gel lanes at 5 to 10μL per lane
Quantity 2 × 250mL
Formulation 9 proteins from 10 to 250kDa in reducing sample buffer
Description PageRuler Plus Prestained Protein Ladder, 10 to 250kDa
Stained Prestained
Detection Visible
Separation Range Broad

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. A blue chromophore is bound to all proteins, except proteins of two reference bands of 70kDa and 25kDa that are colored with an orange dye and one green reference band of 10kDa. PageRuler Plus Prestained Protein Ladder is ready to use: no heating, further dilution or addition of a reducing agent is required before loading onto a gel.


  • Size range – nine proteins spanning 10 to 250kDa

  • Ready-to-use – supplied in a loading buffer for direct loading on gels; no need to boil

  • Sharp bands – color-coded bands of similar intesity for easy visualization

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

  • Bright reference bands – orange at 70 and 25kDa, and green at 10kDa

  • 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