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Protein Molecular Weight Markers

Individual or ladder series of specific mass (kilodalton, kDa) markers for use as approximate sizing standards in protein gel electrophoresis (especially SDS-PAGE); available preformulated in loading buffer, prestained, and unstained.
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Promotions Available

Fisher BioReagents™ EZ-Run™ Prestained Rec Protein Ladder, Fisher BioReagents

Comprised of 10 recombinant proteins covalently coupled to a blue chromophore plus 10 and 72kDa reference bands tagged with green and orange dyes, respectively

Product Type Protein Molecular Weight Marker
Form Liquid
Formulation Supplied in gel-loading buffer
Color Blue
Storage Requirements −20°C
Range 10-170 kDa
For Use With (Application) Monitoring protein separation during SDS-PAGE
2

Invitrogen™ NativeMark™ Unstained Protein Standard  DFS Item

Ready-to-use protein standard designed for molecular weight estimation of proteins using native gel electrophoresis

3
Promotions Available

Cytiva Protein and Peptide Molecular Weight Markers

Run these markers to determine the molecular weight of uncharacterized protein samples with precision. Cytiva Life Sciences™ Protein and Peptide Molecular Weight Markers work by comparing unknowns with carefully selected standards.

Form Solid
Quantity 10 Vials
Storage Requirements Unopened vials should be stored at 4°C
Shelf Life 2 Years
4

Thermo Scientific™ PageRuler™ Plus Prestained Protein Ladder, 10 to 250 kDa

Thermo Scientific™ PageRuler Plus Prestained Protein Ladder is a mixture of nine (9) blue-, orange- and green-stained proteins (10 to 250 kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.

Shipping Condition Approved for shipment on Wet or Dry Ice
Number of Markers 9
Product Type Protein Ladder
Molecular Weight (g/mol) 250, 130, 100, 70, 55, 35, 25, 15, 10 kDa
Ready to Load Yes
Stain Type Blue, Orange, Green
Size Range 10 to 250 kDa
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
Product Line PageRuler
Detection Method Colorimetric, NIR Fluorescence (700 nm), RGB Fluorescence (555 nm)
5

Thermo Scientific™ PageRuler™ Prestained Protein Ladder, 10 to 180 kDa

Thermo Scientific™ PageRuler Prestained Protein Ladder is a mixture of 10 blue-, orange-, and green-stained proteins (10 to 180 kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and western blotting.

Shipping Condition Approved for shipment on Wet or Dry Ice
Number of Markers 10
Product Type Protein Ladder
Molecular Weight (g/mol) 180, 130, 100, 70, 55, 40, 35, 25, 15, 10 kDa
Ready to Load Yes
Stain Type Blue, Orange, Green
Size Range 10 to 180 kDa
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
Product Line PageRuler
Detection Method Colorimetric, NIR Fluorescence (700 nm), RGB Fluorescence (555 nm)
6

Invitrogen™ Novex™ Sharp Pre-stained Protein Standard  DFS Item

Designed for accurate, easy, and convenient molecular weight estimation of a wide range of molecular weight proteins during SDS-PAGE and Western blotting

7

Invitrogen™ NuPAGE™ Large Protein Sensitive Staining Kit  DFS Item

Specifically designed for large protein analysis on NuPAGE Novex Tris-Acetate Gels under denaturing conditions

8

Invitrogen™ NuPAGE™ Large Protein Staining Kit  DFS Item

Specifically designed for large protein analysis on NuPAGE Novex Tris-Acetate Gels under denaturing conditions

9

Thermo Scientific™ PageRuler™ Unstained High Range Protein Ladder

A mixture of 8 unstained proteins (60 to 250kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.

10

Thermo Scientific™ Spectra™ Multicolor High Range Protein Ladder

A mixture of eight blue-, green- and orange-stained proteins (40 to 300kDa) for use as size standards for high MW proteins in gel electrophoresis and Western blotting.

Number of Markers 8
Product Type Protein Ladder
Molecular Weight (g/mol) 300, 250, 180, 130, 100, 70, 50, 40 kDa
Ready to Load Yes
Stain Type Blue, Orange, Green
Size Range 40 to 300 kDa
Product Line Spectra
Detection Method Colorimetric, NIR Fluorescence (700 nm), RGB Fluorescence (555 nm)
11

Invitrogen™ BenchMark™ Pre-stained Protein Ladder  DFS Item

Standard used to monitor electrophoresis or electrophoretic transfer from gel to membrane in Western blots

12

Invitrogen™ iBright™ Prestained Protein Ladder  DFS Item

For visualization and protein sizing during Electrophoresis and confirmation of Western blot detection.

Shipping Condition Dry Ice
Content And Storage Storage buffer: 62.5 mM Tris-H3PO4 (pH 7.5 at 25°C), 1 mM EDTA, 2% (w/v) SDS, 10 mM DTT, 1 mM NaN3 and 33% glycerol

Upon receipt, store at –20°C. Product is shipped on ice.
Number of Markers 12
Product Type Protein Ladder
Molecular Weight (g/mol) 250, 130, 95, 80, 70, 55, 43, 34, 30, 26, 15, 11 kDa
Ready to Load Yes
Color Blue
Size Range 11 to 250 kDa
Gel Compatibility Novex™ Midi Gels, Novex™ Mini Gels, Novex™Tris-Glycine Gels, NuPAGE™ Bis-Tris Gels, NuPAGE™ Gels, NuPAGE™ MES Gels, NuPAGE™ MOPS Gels, NuPAGE™ Tris-Acetate Gels, Precise™ Tris-Glycine Gels, SDS-PAGE Gels, Precise™ Tris-HEPES Gels
Product Line iBright
13

Invitrogen™ NuPAGE™ Large Protein Blotting Kit  DFS Item

Specifically designed for large protein analysis on NuPAGE Novex Tris-Acetate Gels under denaturing conditions

14

Invitrogen™ E-PAGE™ SeeBlue™ Pre-stained Standard  DFS Item

Designed for use with pre-cast E-PAGE™ Electrophoresis System