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Thermo Scientific™ PageRuler™ Unstained Protein Ladder
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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.
Features of the PageRuler Unstained Protein Ladder include:
- 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
Applications
- Accurate protein sizing on SDS-polyacrylamide gels and western blots

Specifications
Specifications
Content And 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 |
Number of Markers | 14 |
Product Type | Protein Ladder |
Ready to Load | Yes |
Size Range | 10 to 200 kDa |
Stain Type | Unstained |
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 (g/mol) | 200, 150, 120, 100, 85, 70, 60, 50, 40, 30, 25, 20, 15, 10 kDa |
Product Line | PageRuler™ |
Quantity | 2 x 250 μL |
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For Research Use Only. Not for use in diagnostic procedures.
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