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Markers & Ladders

NEB’s selection of DNA, RNA and protein markers and ladders combines high quality with exceptional value. DNA, RNA and protein markers are available in a range of sizes and in convenient unstained or prestained formats.

DNA Molecular Weight Markers

New England Biolabs sells a wide range of double-stranded DNA molecular weight markers for electrophoresis. We offer conventional DNA markers as well as a wide range of DNA ladders, ranging from 10 bp up to 48.5 kb. We also offer markers suitable for use in Pulsed-field gel electrophoresis (PFGE) extending up to > 1000 kb. DNA ladders from NEB are available in a variety of formats, including different ready-to-load formats as well as standard formats without pre-mixed loading dye. All standard ladders are provided with a vial of purple loading dye for added convenience. With our popular Quick-Load Purple DNA Ladders, take advantage of crisp bands and improved visibility, as there's no UV shadow.

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RNA Markers and Ladders

Our RNA ladders and markers have a size range of up to 9,000 bases. These include the Low Range ssRNA Ladder (NEB #N0364), ssRNA Ladder (NEB #N0362), dsRNA Ladder (NEB #N0363), and microRNA Marker (NEB #N2102).

 

Protein Standards

New England Biolabs offers a selection of highly pure protein standards. Sizes range from 10 to 250 kDa which is ideal for accurate molecular weight determination for a wide range of expressed proteins. We offer a blue prestained protein standard, as well as a colored prestained protein standard with multi-colored bands for easy identification. Standards are provided pre-mixed with loading buffer and reducing agent.


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Markers & Ladders
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Blue Prestained Protein Standard, Broad Range (11-250 kDa)

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Color Prestained Protein Standard, Broad Range (10-250 kDa)

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Unstained Protein Standard, Broad Range (10-200 kDa)

DNA Markers & Ladders

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1 kb DNA Ladder

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1 kb Plus DNA Ladder

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1 kb Plus DNA Ladder for Safe Stains

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100 bp DNA Ladder

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50 bp DNA Ladder

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Fast DNA Ladder

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Lambda DNA HindIII Digest

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Lambda PFG Ladder

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Low Molecular Weight DNA Ladder

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MidRange PFG Marker

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pBR322 DNA-BstNI Digest

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pBR322 DNA-MspI Digest

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PCR Marker

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Quick-Load® 1 kb DNA Ladder

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Quick-Load® 1 kb Extend DNA Ladder

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Quick-Load® 1 kb Plus DNA Ladder

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Quick-Load® 100 bp DNA Ladder

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Quick-Load® Purple 1 kb DNA Ladder

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Quick-Load® Purple 1 kb Plus DNA Ladder

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Quick-Load® Purple 100 bp DNA Ladder

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Quick-Load® Purple 50 bp DNA Ladder

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Quick-Load® Purple Low Molecular Weight DNA Ladder

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Supercoiled DNA Ladder

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TriDye™ 1 kb DNA Ladder

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TriDye™ 1 kb Plus DNA Ladder

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TriDye™ 100 bp DNA Ladder

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TriDye™ Ultra Low Range DNA Ladder

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λ DNA-BstEII Digest

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λ DNA-Mono Cut Mix

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ΦX174 DNA-HaeIII Digest

Protein Standards

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Blue Prestained Protein Standard, Broad Range (11-250 kDa)

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Blue Protein Loading Dye

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Color Prestained Protein Standard, Broad Range (10-250 kDa)

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Unstained Protein Standard, Broad Range (10-200 kDa)

Quick-Load Purple DNA Ladders

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Gel Loading Dye, Purple (6X)

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Gel Loading Dye, Purple (6X), no SDS

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Quick-Load® Purple 1 kb DNA Ladder

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Quick-Load® Purple 1 kb Plus DNA Ladder

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Quick-Load® Purple 100 bp DNA Ladder

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Quick-Load® Purple 50 bp DNA Ladder

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Quick-Load® Purple Low Molecular Weight DNA Ladder

RNA Markers & Ladders

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dsRNA Ladder

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Low Range ssRNA Ladder

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microRNA Marker

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RNA Loading Dye, (2X)

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ssRNA Ladder

Gel Loading Buffers

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Blue Protein Loading Dye

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Gel Loading Dye, Blue (6X)

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Gel Loading Dye, Orange (6X)

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Gel Loading Dye, Purple (6X)

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Gel Loading Dye, Purple (6X), no SDS

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RNA Loading Dye, (2X)

DNA Markers & Ladders
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1 kb DNA Ladder

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1 kb Plus DNA Ladder

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1 kb Plus DNA Ladder for Safe Stains

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100 bp DNA Ladder

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50 bp DNA Ladder

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Fast DNA Ladder

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Lambda DNA HindIII Digest

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Lambda PFG Ladder

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Low Molecular Weight DNA Ladder

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MidRange PFG Marker

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pBR322 DNA-BstNI Digest

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pBR322 DNA-MspI Digest

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PCR Marker

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Quick-Load® 1 kb DNA Ladder

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Quick-Load® 1 kb Extend DNA Ladder

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Quick-Load® 1 kb Plus DNA Ladder

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Quick-Load® 100 bp DNA Ladder

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Quick-Load® Purple 1 kb DNA Ladder

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Quick-Load® Purple 1 kb Plus DNA Ladder

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Quick-Load® Purple 100 bp DNA Ladder

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Quick-Load® Purple 50 bp DNA Ladder

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Quick-Load® Purple Low Molecular Weight DNA Ladder

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Supercoiled DNA Ladder

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TriDye™ 1 kb DNA Ladder

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TriDye™ 1 kb Plus DNA Ladder

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TriDye™ 100 bp DNA Ladder

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TriDye™ Ultra Low Range DNA Ladder

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λ DNA-BstEII Digest

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λ DNA-Mono Cut Mix

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ΦX174 DNA-HaeIII Digest

Protein Standards
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Blue Prestained Protein Standard, Broad Range (11-250 kDa)

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Blue Protein Loading Dye

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Color Prestained Protein Standard, Broad Range (10-250 kDa)

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Unstained Protein Standard, Broad Range (10-200 kDa)

Quick-Load Purple DNA Ladders
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Gel Loading Dye, Purple (6X)

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Gel Loading Dye, Purple (6X), no SDS

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Quick-Load® Purple 1 kb DNA Ladder

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Quick-Load® Purple 1 kb Plus DNA Ladder

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Quick-Load® Purple 100 bp DNA Ladder

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Quick-Load® Purple 50 bp DNA Ladder

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Quick-Load® Purple Low Molecular Weight DNA Ladder

RNA Markers & Ladders
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dsRNA Ladder

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Low Range ssRNA Ladder

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microRNA Marker

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RNA Loading Dye, (2X)

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ssRNA Ladder

Gel Loading Buffers
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Blue Protein Loading Dye

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Gel Loading Dye, Blue (6X)

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Gel Loading Dye, Orange (6X)

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Gel Loading Dye, Purple (6X)

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Gel Loading Dye, Purple (6X), no SDS

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RNA Loading Dye, (2X)


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Markers & Ladders includes these subcategories:
DNA Markers & Ladders
Protein Standards
Quick-Load Purple DNA Ladders
RNA Markers & Ladders
FAQs for Markers & Ladders
Protocols for Markers & Ladders
Comparison of NEB to Other Commercially Available DNA Ladders
Ladder_Comparison
Comparison of the NEB 1kb (left) and 100bp (right) DNA Ladders to other commercially available DNA Ladders. Note: The 500 bp DNA Ladder from Roche is used in the 1 kb DNA Ladder comparison.
DNA Markers & Ladders
DNA Markers & Ladders Selection Chart
NEB offers a variety of DNA ladders with sizes ranging from 25 bp to 40 kb for use in agarose gel electrophoresis. NEB also offers double-stranded DNA molecular weight markers for conventional with sizes ranging from 10 bp to 23,000 base pairs for use in agarose gel electrophoresis.
Protein Markers & Ladders
protein ladders
RNA Markers & Ladders
Legal Information

Products and content are covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB). The use of trademark symbols does not necessarily indicate that the name is trademarked in the country where it is being read; it indicates where the content was originally developed. All other trademarks are the property of their respective owners. The use of this product may require the buyer to obtain additional third-party intellectual property rights for certain applications. For more information, please email busdev@neb.com.

This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.