Molecular Weight Markers

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.

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

Mixture of 10 blue-, orange- and green-stained proteins (10 to 180kDa) used as size standards in protein electrophoresis (SDS-PAGE) and Western blotting.

Invitrogen™ SeeBlue™ Plus2 Pre-stained Protein Standard

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

Thermo Scientific™ Spectra™ Multicolor Broad Range Protein Ladder

A 4-color protein standard containing 10 prestained proteins (10 to 260kDa) for use as size standards in gel electrophoresis and Western blotting.

Invitrogen™ HiMark™ Pre-stained Protein Standard

Designed for analysis of high molecular weight proteins on NuPAGE™ Novex™ Tris-Acetate gels

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

GE Healthcare Rainbow™ Molecular Weight Markers

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

Invitrogen™ Mark12™ Unstained Standard

Allows the closest estimation of molecular weight of your sample protein over a wide molecular weight range

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).

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).

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

Invitrogen™ NativeMark™ Unstained Protein Standard

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

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

Fisher BioReagents™ EZ-Run™ Prestained Protein Marker

Ideal for monitoring protein separation during electrophoresis without staining and for verifying electroblotting of proteins onto membranes

Invitrogen™ BenchMark™ Protein Ladder

Molecular weight standard for SDS-PAGE

Invitrogen™ Novex™ Sharp Unstained 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

Thermo Scientific™ PageRuler™ Unstained Low Range Protein Ladder

A mixture of seven purified proteins and peptides (3.4 to 100kDa) for use as size standards in peptide and small protein gel electrophoresis.

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.

Invitrogen™ MagicMark™ XP Western Protein Standard

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

Thermo Scientific™ Pierce™ Prestained Protein MW Marker

A mixture of six blue-stained natural proteins (20 to 120kDa) for use as size standards in protein electrophoresis (SDS-PAGE).

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.

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.

GE Healthcare pI Markers

Run these markers in parallel with the experimental samples on isoelectric focusing gels. GE Healthcare Life Sciences™ pI Markers are lyophilized mixtures of stable, salt-free, highly purified proteins.

Invitrogen™ IEF Marker 3-10

Ready-to-use protein marker especially developed for IEF applications

GE Healthcare Blue Dextran 2000 Protein Standard

Determine the void fraction in high-resolution gel filtration columns

Invitrogen™ BenchMark™ His-tagged Protein Standard

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

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.

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.

Invitrogen™ BenchMark™ Pre-stained Protein Ladder

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

Invitrogen™ BenchMark™ Fluorescent Protein Standard

Consists of fluorescent dye-conjugated proteins, ranging in size from approx. 11-155kDa

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