Gel Electrophoresis Markers

Rockland’s Gel Electrophoresis Markers

Rockland’s Gel Electrophoresis Marker (GEM) product line offers a variety of prestained protein standards and DNA ladders for electrophoresis applications. Protein standards suitable for SDS- PAGE and western blot analysis, and DNA ladders for use in agarose gels, are provided as ready-to-use markers. All GEM products display an array of bands to eliminate molecular weight size ambiguity, while reducing the need for hands-on work. These broad range markers are ideal for use in a variety of gels with a variety of running buffers.

The GEM product line is designed for ease, convenience and reliability. The ready-to-use format, combined with their stability at room temperature for 6 months, dramatically reduces the time required to prepare gel electrophoresis applications. Less work, more results.






Rockland GEM Broad Range Prestained Protein Standards

Rockland GEM Broad Range Prestained Protein Standards are available in dual-colored and tri-colored formats for easy readability. Stable at room temperature for up to 6 months, the standards allow for stress-free observation of protein separation during SDS-polyacrylamide gel electrophoresis (SDS-PAGE). They are suitable for the detection of protein size after Western blot transfer onto membranes (PVDF, nylon, or nitrocellulose).


Ruby Prestained Protein Standard 10-175kDa

Sapphire Prestained Protein Standard 10-180kDa

Opal Prestained Protein Standard 10-180kDa

Opal Prestained Protein Standard 10-245kDa

Opal Prestained Protein Standard 3.5-245kDa


Protein Molecular Weight Marker 14 - 120kDa




Rockland GEM Broad Range DNA Ladders

Diamond Ready-to-Use DNA Ladders contain a unique combination of PCR products and a number of proprietary plasmids digested with appropriate restriction enzymes to yield various fragments, suitable for use as molecular weight standards for agarose gel electrophoresis applications.

Diamond Ready-to-Use DNA Ladder 100-1500bp

Diamond Ready-to-Use DNA Ladder 100-3000bp

Diamond Ready-to-Use DNA Ladder 250-10Kbp

Diamond Ready-to-Use DNA Ladder 100-10Kbp


Diamond Ready-to-Use DNA Ladder 50-150bp


Diamond Ready-to-Use DNA Ladder 250-25kbp



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Blocking Buffers 


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TrueBlot IP/Western Blot Mouse Rabbit Goat




Secondary Antibodies Button




Western Blotting Side Bar Button




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