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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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1 – 15 of 69 results
1

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).

EDGE
2

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 3 colors: 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)
3
Promotions Available

Invitrogen™ iBright™ Prestained Protein Ladder

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

EDGE
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
Stain Type 1 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
4

Thermo Scientific™ PageRuler™ Unstained Protein Ladder

Unstained mixture of 14 recombinant, highly purified proteins (10kDa to 200kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and western blotting.

EDGE
Number of Markers 14
Product Type Protein Ladder
Molecular Weight (g/mol) 200, 150, 120, 100, 85, 70, 60, 50, 40, 30, 25, 20, 15, 10 kDa
Ready to Load Yes
Stain Type Unstained
Size Range 10 to 200 kDa
Product Line PageRuler
5
Promotions Available

Thermo Scientific™ PageRuler™ Prestained NIR Protein Ladder

A mixture of 10 proteins (11 to 250KDa) that are blue-stained and fluor-labeled for near-IR fluorescent visualization and protein sizing following electrophoresis.

EDGE
Number of Markers 10
Product Type Protein Ladder
Molecular Weight (g/mol) 250, 130, 95, 70, 55, 43, 34, 26, 15, 11 kDa
Ready to Load Yes
Stain Type 1 color: Blue
Size Range 11 to 250 kDa
Product Line PageRuler
Detection Method Colorimetric, NIR Fluorescence (700 nm)
6

Thermo Scientific™ Pierce™ Prestained Protein MW Marker

Thermo Scientific Prestained Protein Molecular Weight Marker is a mixture of six blue-stained natural proteins (20 to 120 kDa) for use as size standards in protein electrophoresis (SDS-PAGE).

EDGE
Content And Storage Storage Buffer: 62.5 mM Tris · H3PO4 (pH 7.5 at 25°C), 1 mM EDTA, 2% (w/v) SDS, 1 mM DTT, 1.5 mM NaN3 and 33% (v/v) glycerol.

Upon receipt store at -20°C. Product is shipped with an ice pack.
Number of Markers 6
Product Type Protein Molecular Weight (MW) Marker
Molecular Weight (g/mol) 120, 85, 50, 35, 25, 20 kDa
Ready to Load Yes
Stain Type 1 color: Blue
Size Range 20 to 120 kDa
Product Line Pierce
Detection Method Colorimetric
7

Invitrogen™ MagicMark™ XP Western Protein Standard

Specifically designed for easy and convenient protein molecular weight estimation directly on Western blots

EDGE
Shipping Condition Dry Ice
Number of Markers 9
Molecular Weight (g/mol) 220, 120, 100, 80, 60, 50, 40, 30, 20 kDa
Ready to Load Yes
Stain Type Unstained
System Type Western Blotting, SDS-PAGE
Size Range 20 to 220 kDa
Product Line MagicMark
Detection Method User defined detection system
8

Thermo Scientific™ PageRuler™ Unstained Low Range Protein Ladder

Thermo Scientific PageRuler Unstained Low Range Protein Ladder is a mixture of eight purified proteins and peptides (3.4 to 100 kDa) for use as size standards in peptide and small-protein gel electrophoresis.

EDGE
Number of Markers 8
Product Type Protein Ladder
Molecular Weight (g/mol) 100, 30, 25, 20, 15, 10, 5, 3.4 kDa
Ready to Load Yes
Stain Type Unstained
System Type SDS-PAGE
Size Range 3.4 to 100 kDa
Product Line PageRuler
9

Thermo Scientific™ Spectra™ Multicolor Broad Range Protein Ladder

Thermo Scientific™ Spectra Multicolor Broad Range Protein Ladder is a 4-color protein standard containing 10 prestained proteins (10 to 260 kDa) for use as size standards in gel electrophoresis and Western blotting.

EDGE
Shipping Condition Approved for shipment on Wet or Dry Ice
Number of Markers 10
Product Type Protein Ladder
Molecular Weight (g/mol) 260, 140, 100, 70, 50, 40, 35, 25, 15, 10 kDa
Ready to Load Yes
Stain Type 4 colors: Blue, Orange, Green, Pink
Size Range 10 to 260 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 Spectra
Detection Method Colorimetric, NIR Fluorescence (700 nm), RGB Fluorescence (555 nm)
10

Thermo Scientific™ PageRuler™ Unstained Broad Range Protein Ladder

A mixture of 11 proteins (5 to 250kDa) for use as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.

EDGE
Number of Markers 11
Product Type Protein Ladder
Molecular Weight (g/mol) 250, 150, 100, 70, 50, 40, 30, 20, 15, 10, 5 kDa
Ready to Load Yes
Stain Type Unstained
Size Range 5 to 250 kDa
Product Line PageRuler
11
Promotions Available

Thermo Scientific™ Spectra™ Multicolor Low Range Protein Ladder

A mixture of six proteins and synthetic peptides (1.7 to 40kDa) for use as size standards for peptides and small proteins in gel electrophoresis and Western blotting.

EDGE
12

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.

EDGE
Form Solid
Quantity 10 Vials
Storage Requirements Unopened vials should be stored at 4°C
Shelf Life 2 Years
13

Invitrogen™ SeeBlue™ Plus2 Pre-stained Protein Standard

Allows you to easily visualize protein molecular weight ranges during electrophoresis and quickly evaluate Western transfer efficiency

14
Promotions Available

Invitrogen™ NativeMark™ Unstained Protein Standard

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

15

Invitrogen™ SeeBlue™ Pre-stained Protein Standard

Allows you to easily monitor the progress of your gel run and is an excellent tool for judging Western transfer efficiency.