DNA Molecular Weight Markers
New England Biolabs sells a wide range of double-stranded DNA molecular weight markers for conventional electrophoresis. Conventional electrophoresis markers include: HindIII (NEB #N3012) and BstEII (NEB #N3014) digests of Lambda DNA, BstNI (NEB #N3031) and MspI (NEB #N3032) digests of pBR322 DNA, and a HaeIII (NEB #N3026) digest of φX174 DNA. These markers have a size range of approximately 10 base pairs to 23,000 base pairs. Our Lambda DNA–Mono Cut Mix (NEB #N3019) is designed to be used as an RFLP marker on Southern blots because it provides an uncomplicated gel pattern.
We also supply a series of DNA ladders ranging from 25 bp to 48.5 kb. NEB’s DNA ladders are available in 4 formats: Conventional (NEB #N3231, NEB #N3232, NEB #N3200), Quick-Load® (NEB #N0467, NEB #N0468, NEB #N0469) with bromophenol blue tracking dye, Quick Load Purple (NEB #N0550, NEB #N0551, NEB #N0552, NEB #N0556, NEB #N0557) using a non-fluorescing, purple dye, and TriDye™ (NEB #N3271, NEB #N3272, NEB #N3270) containing three dyes to track gel migration. NEB's DNA ladders feature exceptional quality and value. With our new Quick-Load Purple DNA Ladders (NEB #N0550, NEB #N0551, NEB #N0552), you'll appreciate the crisp bands and improved visibility, since there's no UV shadow.
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).
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.
Markers & Ladders includes these subcategories:
FAQs for Markers & Ladders
Protocols for Markers & Ladders
The PCR brochure provides product information on the wide range of DNA polymerases available from NEB, including tools for selection and troubleshooting tips.
Protein Expression & Purification Brochure
The Protein Expression and Purification brochure provides information on the advanced tools for protein expression and purification offered by NEB.
Other Tools & Resources
Comparison of NEB to Other Commercially Available DNA Ladders
DNA Markers & Ladders
DNA Markers & Ladders Selection Chart
Protein Markers & Ladders
RNA Markers & Ladders
While NEB develops and validates its products for various applications, the use of this product may require the buyer to obtain additional third party intellectual property rights for certain applications.
For more information about commercial rights, please contact NEB's Global Business Development team at firstname.lastname@example.org.
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.