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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Invitrogen™ BenchMark™ His-tagged Protein Standard

Used as a positive control and for molecular weight sizing in his-tagged fusion protein detection

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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.

Pricing & Availability
Specifications

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
Color	Blue
Size Range	11 to 250 kDa
Product Line	PageRuler
Detection Method	Colorimetric, NIR Fluorescence (700 nm)

Invitrogen™ Protein Molecular Weight Standards (broad range)

Include 11 proteins from 6500 to 205,000 daltons

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Invitrogen™ PeppermintStick™ Phosphoprotein Molecular Weight Standards

PeppermintStick Phosphoprotein Molecular Weight Standards are a mixture of phosphorylated and nonphosphorylated proteins ranging from 14.4 to 116 kDa.

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Specifications

Stain Type	Fluorescent

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).

Pricing & Availability
Specifications

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
Color	Blue
Size Range	20 to 120 kDa
Product Line	Pierce
Detection Method	Colorimetric

Invitrogen™ iBright Prestained Protein Ladder

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

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Thermo Scientific™ SuperSignal™ Enhanced Molecular Weight Protein Ladder

Ready-to-use mix of recombinant proteins (20 to 150K) with IgG-binding sites for chemiluminescent, fluorescent, chromogenic or other detection methods.

Pricing & Availability
Specifications

Number of Markers	8
Product Type	Protein Ladder
Molecular Weight (g/mol)	150, 100, 80, 60, 50, 40, 30, 20 kDa
Ready to Load	Yes
Stain Type	Unstained
Size Range	20 to 150 kDa
Product Line	SuperSignal
Detection Method	User defined detection system

Thermo Scientific™ SuperSignal™ Molecular Weight Protein Ladder

Ready-to-use mix of recombinant proteins (20 to 150K) with IgG-binding sites for chemiluminescent, fluorescent, chromogenic or other detection methods.