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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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.

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Specifications

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)

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

Mixture of 9 blue-, orange- and green-stained proteins (10 to 250kDa) used as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.

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Cytiva Rainbow™ Molecular Weight Markers

Monitor progress of protein electrophoresis and assess transfer efficiency and molecular weight of blotted proteins without staining. Cytiva Life Sciences™ Rainbow™ Molecular Weight Markers use bright, distinctive colors to allow easier confirmation of transfer to blotting membranes and orientation.

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Specifications

Description	Rainbow molecular weight markers enhanced to enable faster and simpler identification of proteins on SDS-polyacrylamide gels.
Form	Liquid
Product Type	Protein Molecular Weight Marker/Ladder
Color	Multi
Sufficient For	50 Minigels or 25 large gels
Quantity	250 μL
Storage Requirements	-15 to -30°C
Shelf Life	24 Months

Invitrogen™ iBright™ Prestained Protein Ladder

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

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Specifications

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™

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.

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Pricing and Availability
Specifications

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)

Invitrogen™ NativeMark™ Unstained Protein Standard

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

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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.

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Pricing and Availability
Specifications

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	3 colors: 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)

Thermo Scientific™ PageRuler™ Unstained Protein Ladder

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

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Specifications

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™

Invitrogen™ Novex™ Sharp Pre-stained Protein Standard

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

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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).

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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.

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Pricing and Availability
Specifications

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	3 colors: Blue, Orange, Green
Size Range	40 to 300 kDa
Product Line	Spectra™
Detection Method	Colorimetric, NIR Fluorescence (700 nm), RGB Fluorescence (555 nm)

Proteintech Prestained Protein Marker

The PL00001 Regular Range Protein Marker is a ready to use three-color protein standard with 10 prestained proteins covering a wide range of molecular weights from 10 to 180 kDa.