Thermo Scientific™

PageRuler™ Unstained Protein Ladder

Catalog number: 26614
Thermo Scientific™

PageRuler™ Unstained Protein Ladder

Catalog number: 26614
Catalog Number
Unit Size
2 x 250 µL
Price (USD)
Price: 114.00
Your Price:
Catalog NumberUnit SizePrice (USD)Quantity
266142 x 250 µL
Price: 114.00
Your Price:
Product Overview
Citations & References
Additional Information
Thermo Scientific PageRuler Unstained Protein Ladder is a mixture of 14 recombinant, highly purified, unstained proteins (10 to 200 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—50 kDa band is stronger than the others for easy orientation
• Tagged—the ladder proteins 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
10 to 200 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
200, 150, 120, 100, 85, 70, 60, 50, 40, 30, 25, 20, 15, 10 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, proteins at 0.02 to 0.05 mg/mL of 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