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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