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Protein Molecular Weight Markers
Protein molecular weight markers contain peptide or protein molecules of several pre-defined molecular weights for use as size standards in gel electrophoresis. Products include kits, markers, and ladders containing low-range and high-range standards, available unstained or pre-stained.
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PageRuler™ Plus Prestained Protein Ladder, 10 to 250 kDa Thermo Scientific™
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.
PageRuler™ Prestained Protein Ladder, 10 to 180 kDa Thermo Scientific™
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.
Spectra™ Multicolor Low Range Protein Ladder Thermo Scientific™
Thermo Scientific™ Spectra Multicolor Low Range Protein Ladder is a mixture of six (6) proteins and synthetic peptides (1.7 to 40kDa) for use as size standards for peptides and small proteins in gel electrophoresis and Western blotting.
Spectra™ Multicolor High Range Protein Ladder Thermo Scientific™
Thermo Scientific™ Spectra Multicolor High Range Protein Ladder is a mixture of eight (8) blue-, green and orange-stained proteins (40 to 300kDa) for use as size standards for high MW proteins in gel electrophoresis and Western blotting.
BenchMark™ Protein Ladder Invitrogen™
Molecular weight standard for SDS-PAGE
Novex™ Sharp Pre-stained Protein Standard Invitrogen™
Designed for accurate, easy, and convenient molecular weight estimation of a wide range of molecular weight proteins during SDS-PAGE and Western blotting
HiMark™ Pre-stained Protein Standard Invitrogen™
Designed for analysis of high molecular weight proteins on NuPAGE™ Novex™ Tris-Acetate gels
SeeBlue™ Plus2 Pre-stained Protein Standard Invitrogen™
Allows you to easily visualize protein molecular weight ranges during electrophoresis and quickly evaluate Western transfer efficiency
Pierce™ Unstained Protein MW Marker Thermo Scientific™
Thermo Scientific™ Unstained Protein Molecular Weight Marker is a mixture of seven native proteins (14.4kDa to 116kDa) for use as size standards in protein electrophoresis (SDS-PAGE).
BenchMark™ Pre-stained Protein Ladder Invitrogen™
Standard used to monitor electrophoresis or electrophoretic transfer from gel to membrane in Western blots
Novex™ Sharp Unstained Protein Standard Invitrogen™
Designed for accurate, easy and convenient molecular weight estimation of a wide range of molecular weight proteins during SDS-PAGE and western blotting
IEF Marker 3-10 Invitrogen™
Ready-to-use protein marker especially developed for IEF applications
MagicMark™ XP Western Protein Standard Invitrogen™
Specifically designed for easy and convenient protein molecular weight estimation directly on Western blots
BenchMark™ His-tagged Protein Standard Invitrogen™
Used as a positive control and for molecular weight sizing in his-tagged fusion protein detection
NativeMark™ Unstained Protein Standard Invitrogen™
Ready-to-use protein standard designed for molecular weight estimation of proteins using native gel electrophoresis
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Choose from a variety of protein ladders (molecular weight markers) for protein electrophoresis and western blotting applications . Each protein standard or ladder is supplied in a ready-to-use format, eliminating the need to reduce, pre-mix, or add loading dyes.
Reliable transfer of high molecular weight (HMW) proteins (i.e., >150 kDa) from a gel to membrane during western blotting is a common challenge. Many factors affect the efficiency at which HMW proteins transfer.
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User Guide: Unstained Protein Molecular Weight Marker
User Guide: Pierce Prestained Protein Molecular Weight Marker