Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More

Thermo Scientific™ Pierce™ Unstained Protein MW Marker

A mixture of seven native proteins (14.4kDa to 116kDa) for use as size standards in protein electrophoresis (SDS-PAGE).

Supplier:  Thermo Scientific™ 26610

Catalog No. PI26610

Add to cart



Thermo Scientific™ Unstained Protein Molecular Weight Marker is a mixture of seven native proteins (14.4kDa to 116kDa) for use as size standards in protein electrophoresis (SDS-PAGE).

The protein MW marker is designed for accurate sizing of proteins in SDS-polyacrylamide gel electrophoresis, as well as on PVDF, nylon and nitrocellulose membranes. The protein standard produces sharp bands on protein mini gels following staining with Thermo Scientific Pierce Gel Stains or other coomassie dye or silver stains.


  • Size range – seven proteins spanning 14.4 to 116kDa

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

  • Sharp bands – equal intensity upon coomassie or silver staining

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


Proteins (0.1 to 0.2mg/mL of each) in 62.5mM Tris-HCl (pH 7.0 at 25°C), 1mM EDTA, 2% SDS, 50mM DTT, 30mM NaCl, 1mM NaN3, 0.01% bromophenol blue and 50% glycerol; Component proteins: beta-galactosidase (116kDa), bovine serum albumin (66.2kDa), ovalbumin (45.0kDa), lactate dehydrogenase (35.0kDa), REase Bsp98I (25.0kDa), beta-lactoglobulin (18.4kDa), lysozyme (14.4kDa)

Recommended for:

Accurate protein sizing on SDS-polyacrylamide gels and Western blots



Contents: two vials of 1 mL each

Storage buffer: 62.5 mM Tris-H3PO4 (pH 7.5 at 25°C), 1mM EDTA, 2% SDS, 50 mM DTT, 30 mM NaCl, 0.01% bromophenol blue and 50% glycerol

Storage: Upon receipt store at -20°C

Protein Ladder
14.4 to 116 kDa
Bolt™ Bis-Tris Plus Gels, Novex™ Tricine Gels, Novex™ Tris-Glycine Gels, NuPAGE™ Bis-Tris Gels, NuPAGE™ Tris-Acetate Gels, SDS-PAGE Gels
Approved for shipment on Wet or Dry Ice
116, 66.2, 45, 35, 25, 18.4, 14.4 kDa
2 x 1 mL
Western Blotting, SDS-PAGE


Product Certifications


Provide Content Correction

We continue to work to improve your shopping experience and your feedback regarding this content is very important to us. Please use the form below to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Cancel Submit