DNA Ladders

DNA ladders comprising fragments of specific base pair lengths are available for estimation of molecular size from 10 bp to 12 kb. For easy determination of fragment size by visual reference, several DNA ladders include bands that are two to three times more intense than the other bands. All DNA ladders can be stained with ethidium bromide, SYBR® Safe, or other DNA stains, and several can be radiolabeled using T4 DNA polymerase or T4 polynucleotide kinase.

Ladders & Markers Selection Guide

DNA Ladder Base Pair (bp) Range
 λ DNA/Hind III Fragments 125 bp–23.1 kb
 X FF174 RF DNA/Hae III Fragments 72 bp–1.35 kb
 pUC19/Sau3A I Digest dsDNA marker 8–955 bp
 1Kb Plus DNA Ladder (replaces 1Kb DNA Ladder) 0.1–12 kb
 1Kb DNA Extension Ladder 0.5–40 kb
 10bp DNA Ladder 10–200 bp
 25bp DNA Ladder 25–500 bp
 50bp DNA Ladder
 50–800 bp
 100bp DNA Ladder 0.1–1.5 kb
 123bp DNA Ladder 123–3,075 bp
 250bp DNA Ladder 0.25–3.5 kb
 500bp DNA Ladder 
 Supercoiled DNA Ladder2–16 kb
 Low DNA Mass ladder100–2,000 bp
 High DNA Mass ladder   1–10 kb
 High Molecular Weight DNA Markers 

DNA Mass Ladders

DNA mass ladders are specifically created for quantitative estimation of DNA mass in gels. These ladders consist of equimolar mixtures of DNA fragments for determining the mass of unknown DNA samples on gels in the low and high molecular weight ranges.

Size Markers

Double-stranded DNA size markers with band sizes ranging from 72 bp to 23.1 kb are available for use in agarose gel electrophoresis.  These markers are suitable for estimation of fragment length.

Figure above. pUC19/Sau3A I Digest dsDNA marker.



Ordering Information

Sku Name Size Price Qty
10821015 10 bp DNA Ladder 50 µg USD 134.00
10597011 25 bp DNA Ladder 50 µg USD 136.00
10416014 50 bp DNA Ladder 50 µg USD 133.00
15613011 123 bp DNA Ladder 100 µg Contact Us  
10596013 250 bp DNA Ladder 75 µg USD 140.00
10787018 1 Kb Plus DNA Ladder 250 µg USD 154.00
10496016 High DNA Mass Ladder 50 applications USD 115.00
15611015 ΦX174 RF DNA/Hae III Fragments 40 µg USD 144.00
15612013 λ DNA/Hind III Fragments 500 µg USD 199.00
AM7760 pUC19 DNA (Sau3A I digested) 50 µg USD 194.00