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Life Science > Molecular Biology > PCR/Amplification > DNA/ RNA Molecular Weight Markers
PCR/Amplification

DNA/ RNA Molecular Weight Markers


Accurately determine the size of your PCR fragment with Sigma's Molecular weight markers. Our line of DNA and RNA molecular weight markers allow you to select the right marker for your gel.

  • Flexibility to Meet Your Needs – DNA or RNA markers available in a wide-range of sizes (<20 bp up to 10,000 bp).
  • Lot Specific Validation – Fully validated for size determination of nucleic acid.

  PCR Low DNA Ladders
DNA Ladders
DNA Markers
Ribosomal RNA Markers
RNA Markers

PCR Low DNA Ladders  
Product Name Product # 
PCR 100 bp Low Ladder P1473
PCR 20 bp Low Ladder P1598
PCR Low Ladder Set D7808
DNA Ladders  
Product Name Product # 
123 bp Ladder D5042
1 kb Ladder D0428
Step Ladder, 50 bp S7025
DNA Markers  
Product Name Product # 
pUC18 DNA Dpn I digest D6683
DirectLoad™ Wide Range DNA Marker, 50 - 10,000 bp D7058
Ribosomal RNA Markers  
Product Name Product # 
5S Ribosomal RNA from Escherichia coli R8385
18S + 28S Ribosomal RNA from calf liver R0889
RNA Markers  
Product Name Product # 
Transcript RNA Markers 0.1-1 kb R6895
Transcript RNA Markers 0.2-10 kb R7020
Transcript RNA Markers 0.28-6.6 kb R7644
RNA Marker template set R4142


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