Molecular Weight Markers

Molecular-weight size markers are a set of standards used to identify the approximate size of a molecule run on a gel during electrophoresis, using the principle that molecular weight is inversely proportional to migration rate through a gel matrix. The molecular weight markers offered are ideal for verification of PCR products, for size analysis of digested DNA, and easy band identification of a number of different fragments. Certain models are available pre-mixed with loading dye.

Lambda DNA, 250 µg, Promega

Supplier: Promega Corporation

Generates molecular weight size markers used in gel analysis of nucleic acids; nucleotide sequence has been determined.

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Lambda DNA-BstE II Digest, New England Biolabs

Supplier: New England Biolabs (NEB)

The BstEII digest of lambda DNA (cI857 ind 1 Sam 7) yields 14 fragments suitable for use as molecular weight standards for agarose gel electrophoresis

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Lambda DNA/EcoRI Markers, 100 µg, Promega

Supplier: Promega Corporation

Generated by digesting lambda DNA to completion with EcoRI, resulting in six DNA fragments of 3,530-21,226bp.

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Supercoiled DNA Ladder , New England Biolabs

Supplier: New England Biolabs (NEB)

The Supercoiled DNA ladder contains 9 proprietary supercoiled plasmids, ranging in size from 2 to 10 kb, that are suitable for use as supercoiled molecular weight standards for agarose electrophoresis

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DNA Ladder, 100 bp, New England Biolabs

Supplier: New England Biolabs (NEB)

A number of proprietary plasmids are digested to completion with appropriate restriction enzymes to yield 12 bands suitable for use as molecular weight standards for agarose gel electrophoresis.

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QUICK-LOAD® DNA Ladder, 1 kb, New England Biolabs

Supplier: New England Biolabs (NEB)

Quick-Load® 1 kb DNA Ladder is a premixed, ready-to-load molecular weight marker containing bromophenol blue as a tracking dye

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TRIDYE™ DNA Ladder, 1 kb Plus, New England Biolabs

Supplier: New England Biolabs (NEB)

TriDye™ 2-Log DNA Ladder is a pre-mixed, ready-to-load molecular weight marker containing 3 dyes which serve as visual aids to monitor the progress of migration during agarose gel electrophoresis

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Markers Lambda Ladders, 40 to 60 lanes, Promega

Supplier: Promega Corporation

50-1,000kb; 20 bands. Concatamer of lambda phage DNA. Embedded in dye-colored, 1% agarose string molds in 50mM EDTA at 0.5ug/5mm.

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QUICK-LOAD® Purple DNA Ladder, New England BioLabs

Supplier: New England Biolabs (NEB)

Quick-Load Purple 2-Log DNA Ladder is a pre-mixed, ready-to-load molecular weight marker containing one tracking dye

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12 Epitope MBP Tag Protein Marker Lysate, Rockland Immunochemicals

Supplier: Rockland Immunochemical

12 Epitope MBP Tag Loading Control Protein Marker

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1 kb DNA Step Ladder, 90 µg, Promega

Supplier: Promega Corporation

Ten blunt-ended DNA fragments ranging from 1kb to 10kb in 1kb increments.

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pBR322 DNA-Msp I Digest, New England Biolabs

Supplier: New England Biolabs (NEB)

The MspI digest of pBR322 DNA yields 26 fragments

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Gelite™ 50 bp DNA Ladder

Supplier: AAT Bioquest

The Gelite™ 50 bp DNA Ladder is ideal for sizing and approximating the mass of double-stranded DNA within the 50 to 1500 bp range on agarose or polyacrylamide gels.

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RNA Marker

Supplier: Lonza

RNA standards may be denatured with standard procedures, and can be visualized in Northern blots with labeled lambda sequence.

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TRIDYE™ DNA Ladder, 100 bp , New England Biolabs

Supplier: New England Biolabs (NEB)

TriDye™ 100 bp DNA Ladder is a pre-mixed, ready-to-load molecular weight marker containing 3 dyes which serve as visual aids to monitor the progress of migration during agarose gel electrophoresis