Shop All Nucleic Acid Molecular Weight Markers

pUC19 DNA/MspI (HpaII) Marker, ready-to-use Thermo Scientific™

Thermo Scientific pUC19 DNA is digested to completion with the appropriate Thermo Scientific restriction enzyme, then purified and dissolved in storage buffer. The DNA fragments contain blunt or sticky ends, depending on the restriction enzyme used for the markers preparation. pUC19 DNA/MspI (HpaII) Marker, ready-to-use, is premixed with 6X DNA Loading Dye for direct loading onto agarose and polyacrylamide gels.

Highlights

• Sizing and approximate quantification of small DNA fragments
• Sharp bands
• Premixed with 6X DNA Loading Dye for direct loading and room temperature storage
• Supplied with loading dye for sample DNA

Note
• Bands at 501 bp and 498 bp form an anomalous pattern on polyacrylamide gels.
• The shortest fragments (oblique) are not visible in standard electrophoresis.
• Fragment lengths are predicted by computer analysis of the respective DNA sequences.

GeneRuler 100 bp DNA Ladder Thermo Scientific™

Thermo Scientific GeneRuler 100 bp DNA Ladder is recommended for sizing and approximate quantification of a double-stranded DNA in the range of 100 bp to 1,000 bp on agarose or polyacrylamide gels. The DNA ladder consists of 10 DNA fragments and is provided with 6X TriTrack DNA Loading Dye.

Highlights of 100 bp DNA Ladder
Easy visualization—three-color tracking of DNA migration during electrophoresis with 6X TriTrack DNA Loading Dye (contains Xylene Cyanol FF, Bromophenol Blue, and Orange G)
Simplicity—one loading dye for a variety of samples
Sharp bands—clear results with mixtures of individual chromatography-purified DNA fragments

Product use
This double-stranded DNA ladder is compatible with 1–2 % standard and precast agarose slab gels and can be visualized after ethidium bromide or SYBR Safe staining. A uniform intensity of bands and bright reference bands allow easy sizing and orientation. A defined amount of DNA in each band enables approximate quantification of sample DNA.

Low DNA Mass Ladder Invitrogen™

Invitrogen Low DNA Mass Ladder is designed for sizing and approximate quantification of double-stranded DNA in the range of 100 bp to 2,000 bp. Low DNA Mass Ladder consist of six individual chromatography-purified DNA fragments.

Low DNA Mass Ladder is ideal for separation on 1–2% agarose gels.

Highlights of Low DNA Mass Ladder:
Sharp, clear bands—chromatography purified fragments for consistent and reliable results
Convenient—provided with 10X BlueJuice Gel Loading Buffer for tracking of sample DNA migration
Precise—an exact amount of DNA in each band

Product use
The double-stranded DNA ladder can be visualized on 1–2% agarose gels after ethidium bromide or SYBR Safe staining. The ladder is designed with DNA bands of increasing intensity. An exact amount of DNA in each band allows approximate quantification of DNA samples.

NoLimits 1000 bp DNA Fragment Thermo Scientific™

Thermo Scientific NoLimits is a collection of 36 highly-purified individual DNA fragments ranging from 10 to 20,000 bp. Unlike other vendors, where custom standards are produced by PCR, Thermo Scientific NoLimits DNA fragments are produced using specifically designed plasmids purified by patented technology.Plasmid DNA, digested with Thermo Scientific Restriction Enzymes, is chromatography-purified to prepare the individual DNA fragments from the digestion mixture. The results are extremely pure DNA fragments, free of any truncated or degraded molecules. These custom DNA fragments are the best custom standards for applications ranging from electrophoresis (both gel and capillary) to HPLC and beyond.

Features

• Broad range: 10-20,000 bp
• Sharp peaks during capillary electrophoresis, sharp bands during gel electrophoresis
• Precise DNA concentration
• Chromatography-purified individual DNA fragments

Applications

• Gel electrophoresis
• Capillary electrophoresis
• DNA quantification
• HPLC analysis
• Applications where a custom DNA size standard is required.

GeneRuler 100 bp DNA Ladder, ready-to-use Thermo Scientific™

Thermo Scientific GeneRuler 100 bp DNA Ladder is recommended for sizing and approximate quantification of a double-stranded DNA in the range of 100 bp to 1,000 bp on agarose or polyacrylamide gels. The DNA ladder consists of 10 DNA fragments and is provided with 6X TriTrack DNA Loading Dye.

Highlights of 100 bp DNA Ladder
Easy visualization—three-color tracking of DNA migration during electrophoresis with 6X TriTrack DNA Loading Dye (contains Xylene Cyanol FF, Bromophenol Blue, and Orange G)
Simplicity—one loading dye for a variety of samples
Sharp bands—clear results with mixtures of individual chromatography-purified DNA fragments
Convenient—ready-to-load DNA Ladder is premixed with 6X TriTrack DNA Loading dye and stable at room temperature for up to 6 months

Product use
This double-stranded DNA ladder is compatible with 1–2 % standard and precast agarose slab gels and can be visualized after ethidium bromide or SYBR Safe staining. A uniform intensity of bands and bright reference bands allow easy sizing and orientation. A defined amount of DNA in each band enables approximate quantification of sample DNA.

GeneRuler DNA Ladder Mix, ready-to-use Thermo Scientific™

Thermo Scientific GeneRuler DNA Ladder Mix is recommended for sizing and approximate quantification of a double-stranded DNA in the range of 100 bp to 10,000 bp on agarose gels. The DNA ladder consists of 21 DNA fragments and is provided with 6X TriTrack DNA Loading Dye.

Highlights of DNA Ladder Mix
Easy visualization—three-color tracking of DNA migration during electrophoresis with 6X TriTrack DNA Loading Dye (contains Xylene Cyanol FF, Bromophenol Blue, and Orange G)
Simplicity—one loading dye for a variety of samples
Sharp bands—clear results with mixtures of individual chromatography-purified DNA fragments
Convenient—ready-to-load DNA Ladder is premixed with 6X TriTrack DNA Loading dye and stable at room temperature for up to 6 months

Product use
This double-stranded DNA ladder is compatible with 1% standard and precast agarose slab gels and can be visualized after ethidium bromide or SYBR Safe staining. A uniform intensity of bands and bright reference bands allow easy sizing and orientation. A defined amount of DNA in each band enables approximate quantification of sample DNA.

Lambda DNA/EcoRI plus HindIII Marker Thermo Scientific™

Thermo Scientific Lambda DNA/EcoRI+HindIII Marker is recommended for sizing of linear double-stranded large DNA fragments in agarose gels. Lambda DNA is digested to completion with the appropriate Thermo Scientific restriction enzyme(s) and purified and dissolved in storage buffer. DNA fragments contain various sticky ends depending on the restriction enzyme used for preparation of the marker.

Lambda DNA/EcoRI+HindIII Marker can be labeled radioactively with T4 Polynucleotide Kinase. Alternatively, and it can be labeled radioactively or non-radioactively with Klenow fragment or Klenow Fragment, exo- with the fill-in reaction (see Resources for Protocols).

Highlights

• Sizing and approximate quantification of large DNA fragments
• Sharp bands
• Supplied with loading dye for sample DNA

Note
The cohesive ends (the 12nt cos site of lambda DNA) of fragments indicated may anneal and form additional bands. These fragments can be separated by heating at 65°C for 5minutes and then cooling on ice for 3minutes.

The shortest fragments (oblique) are not visible in standard electrophoresis. Fragment lengths are predicted by computer analysis of respective DNA sequences.

NoLimits 1200 bp DNA Fragment Thermo Scientific™

Thermo Scientific NoLimits is a collection of 36 highly-purified individual DNA fragments ranging from 10 to 20,000 bp. Unlike other vendors, where custom standards are produced by PCR, Thermo Scientific NoLimits DNA fragments are produced using specifically designed plasmids purified by patented technology.Plasmid DNA, digested with Thermo Scientific Restriction Enzymes, is chromatography-purified to prepare the individual DNA fragments from the digestion mixture. The results are extremely pure DNA fragments, free of any truncated or degraded molecules. These custom DNA fragments are the best custom standards for applications ranging from electrophoresis (both gel and capillary) to HPLC and beyond.

Features

• Broad range: 10-20,000 bp
• Sharp peaks during capillary electrophoresis, sharp bands during gel electrophoresis
• Precise DNA concentration
• Chromatography-purified individual DNA fragments

Applications

• Gel electrophoresis
• Capillary electrophoresis
• DNA quantification
• HPLC analysis
• Applications where a custom DNA size standard is required.

NoLimits 4000 bp DNA Fragment Thermo Scientific™

Thermo Scientific NoLimits is a collection of 36 highly-purified individual DNA fragments ranging from 10 to 20,000 bp. Unlike other vendors, where custom standards are produced by PCR, Thermo Scientific NoLimits DNA fragments are produced using specifically designed plasmids purified by patented technology.Plasmid DNA, digested with Thermo Scientific Restriction Enzymes, is chromatography-purified to prepare the individual DNA fragments from the digestion mixture. The results are extremely pure DNA fragments, free of any truncated or degraded molecules. These custom DNA fragments are the best custom standards for applications ranging from electrophoresis (both gel and capillary) to HPLC and beyond.

Features

• Broad range: 10-20,000 bp
• Sharp peaks during capillary electrophoresis, sharp bands during gel electrophoresis
• Precise DNA concentration
• Chromatography-purified individual DNA fragments

Applications

• Gel electrophoresis
• Capillary electrophoresis
• DNA quantification
• HPLC analysis
• Applications where a custom DNA size standard is required.

100 bp DNA Ladder Invitrogen™

Invitrogen 100 bp DNA Ladder is designed for sizing and approximate quantification of double-stranded DNA in the range of 100 bp to 2,000 bp. 100 bp DNA Ladder consists of 13 individual chromatography-purified DNA fragments and has reference bands at 2000, 1500, and 600 bp for easy orientation.

100 bp DNA Ladder is ideal for separation on 1–2% agarose gels.

Highlights of 100 bp DNA Ladder:
Sharp, clear bands—chromatography purified fragments for consistent and reliable results
Convenient—provided with 10X BlueJuice Gel Loading Buffer for tracking of sample DNA migration
Precise—an exact amount of DNA in each band

Product use
The double-stranded DNA ladder can be visualized on 1–2% agarose gels after ethidium bromide or SYBR Safe staining. The ladder is designed with a uniform intensity of DNA bands for a clear view of each band. An exact amount of DNA in each band allows approximate quantification of DNA samples.

This ladder can be radiolabeled with T4 polynucleotide kinase or T4 DNA polymerase.

GeneRuler Low Range DNA Ladder Thermo Scientific™

Thermo Scientific GeneRuler Low Range DNA Ladder is recommended for sizing and approximate quantification of a double-stranded DNA in the range of 25 bp to 700 bp on agarose or polyacrylamide gels. The DNA ladder consists of 10 DNA fragments and is provided with 6X TriTrack DNA Loading Dye.

Highlights of Low Range DNA Ladder
Easy visualization—three-color tracking of DNA migration during electrophoresis with 6X TriTrack DNA Loading Dye (contains Xylene Cyanol FF, Bromophenol Blue, and Orange G)
Simplicity—one loading dye for a variety of samples
Sharp bands—clear results with mixtures of individual chromatography-purified DNA fragments

Product use
This double-stranded DNA ladder is compatible with 3% standard and precast agarose slab gels and can be visualized after ethidium bromide or SYBR Safe staining. A uniform intensity of bands and bright reference bands allow easy sizing and orientation. A defined amount of DNA in each band enables approximate quantification of sample DNA.

GeneRuler DNA Ladder Mix, ready-to-use Thermo Scientific™

Thermo Scientific GeneRuler DNA Ladder Mix is recommended for sizing and approximate quantification of a double-stranded DNA in the range of 100 bp to 10,000 bp on agarose gels. The DNA ladder consists of 21 DNA fragments and is provided with 6X TriTrack DNA Loading Dye.

Highlights of DNA Ladder Mix
Easy visualization—three-color tracking of DNA migration during electrophoresis with 6X TriTrack DNA Loading Dye (contains Xylene Cyanol FF, Bromophenol Blue, and Orange G)
Simplicity—one loading dye for a variety of samples
Sharp bands—clear results with mixtures of individual chromatography-purified DNA fragments
Convenient—ready-to-load DNA Ladder is premixed with 6X TriTrack DNA Loading dye and stable at room temperature for up to 6 months

Product use
This double-stranded DNA ladder is compatible with 1% standard and precast agarose slab gels and can be visualized after ethidium bromide or SYBR Safe staining. A uniform intensity of bands and bright reference bands allow easy sizing and orientation. A defined amount of DNA in each band enables approximate quantification of sample DNA.

RiboRuler Low Range RNA Ladder, ready-to-use Thermo Scientific™

Thermo Scientific RiboRuler Low Range RNA Ladder 100-1000 bp, ready-to-use, is a mixture of 7 chromatography purified single-stranded RNA transcripts (100–1000 bp long), produced from specific templates that contain a fragment of the pTZ19R polylinker and Lambda phage fragments.

This ladder is premixed with loading dye.

RiboRuler Low Range RNA Ladder, ready-to-use, is composed of chromatography-purified transcripts what makes them free from NTPs and RNA degradation products. The concentration of each RNA transcript is determined spectrophotometrically. To minimize the possibility of contamination during the use the ladder is aliquotted in smaller volumes.

RiboRuler Low Range RNA Ladder is optimal for end-labeling using T4 Polynucleotide Kinase (see protocol in the Resources) and is ideal for Northern blots.

Highlights

• Sharp bands of uniform intensity
• Easy-to-remember band sizes and quantities
• Approximate RNA quantification by predetermined concentration of ladder bands
• Supplied with 2X RNA Loading Dye
• Stable for 6 months at -20°C

Applications

• RNA sizing and quantification on native or denaturing gels
• Northern blotting.

BlueJuice™ Gel Loading Buffer (10X) Invitrogen™

BlueJuice Gel Loading Buffer (10X) is designed for easy loading and tracking of DNA samples in agarose or native polyacrylamide gels. Visualization of DNA bands will not be obscured by the tracking dyes because they run outside the limits of most DNA samples.

Product use
The recommended concentration of this buffer for use with all DNA samples run on agarose gels is 1X. For acrylamide gels, the recommended concentration is 0.5 X.

NoLimits 100 bp DNA Fragment Thermo Scientific™

Thermo Scientific NoLimits is a collection of 36 highly-purified individual DNA fragments ranging from 10 to 20,000 bp. Unlike other vendors, where custom standards are produced by PCR, Thermo Scientific NoLimits DNA fragments are produced using specifically designed plasmids purified by patented technology.Plasmid DNA, digested with Thermo Scientific Restriction Enzymes, is chromatography-purified to prepare the individual DNA fragments from the digestion mixture. The results are extremely pure DNA fragments, free of any truncated or degraded molecules. These custom DNA fragments are the best custom standards for applications ranging from electrophoresis (both gel and capillary) to HPLC and beyond.

Features

• Broad range: 10-20,000 bp
• Sharp peaks during capillary electrophoresis, sharp bands during gel electrophoresis
• Precise DNA concentration
• Chromatography-purified individual DNA fragments

Applications

• Gel electrophoresis
• Capillary electrophoresis
• DNA quantification
• HPLC analysis
• Applications where a custom DNA size standard is required.
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