Thermo Scientific™

PageRuler™ Unstained Broad Range Protein Ladder

Catalog number: 26630
Thermo Scientific™

PageRuler™ Unstained Broad Range Protein Ladder

Catalog number: 26630
Catalog Number
Unit Size
2 x 250 µL
Price (USD)
Price: 131.00
Your Price:
Catalog NumberUnit SizePrice (USD)Quantity
266302 x 250 µL
Price: 131.00
Your Price:
Product Overview
Citations & References
Additional Information
Thermo Scientific PageRuler Unstained Broad Range Protein Ladder is a mixture of 11 proteins (5 to 250 kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and western blotting. The protein ladder 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.

Compare and view all other protein standards and ladders ›

Product features
• Reference bands—the 100, 50, and 20 kDa bands are more intense for easy orientation
• Tagged— each protein in the contains an integral Strep-tag™ II sequence and can be detected on western blots using Strep-Tactin™ conjugates or an antibody against Strep-tag™ II sequence

• Accurate protein sizing on SDS-polyacrylamide gels and western blots

For Research Use Only. Not for use in diagnostic procedures.


Number of Markers
Product Type Specs
Protein Ladder
Ready to Load
Size Range
5 to 250 kDa
Stain Type
Gel Compatibility
Bolt™ Bis-Tris Plus Gels, Novex™ Tricine Gels, Novex™ Tris-Glycine Gels, NuPAGE™ Bis-Tris Gels, NuPAGE™ Tris-Acetate Gels, SDS-PAGE Gels
Molecular Weight
250, 150, 100, 70, 50, 40, 30, 20, 15, 10, 5 kDa
Product Line
2 x 250 mL
Shipping Condition
Approved for shipment on Wet or Dry Ice
System Type
Western Blotting, SDS-PAGE

Contents & Storage

Contents: two vials of 250 µL each

Storage buffer: 62.5 mM Tris-H3PO4 (pH 7.5 at 25°C), 1 mM EDTA, 2% SDS, 10 mM DTT, 1 mM NaN3, 0.01% bromophenol blue and 33% glycerol

Storage: Upon receipt store at -20°C