Suggested protocol for loading a DNA Ladder/marker also provides an interactive version of this protocol where you can discover and share optimizations with the research community. 

For use with λ DNA-Mono Cut Mix (N3019), фX174 DNA-HaeIII Digest (N3026),pBR322 DNA-BstNI Digest (N3031), pBR322 DNA-MspI Digest (N3032), 2-Log DNA Ladder (0.1-10.0 kb) (N3200), 100 bp DNA Ladder (N3231), 1 kb DNA Ladder (N3232), Low Molecular Weight DNA Ladder (N3233), and 50 bp DNA Ladder (N3236)


The following protocol is recommended for a 5 mm wide lane.


  1. Prepare loading mixture: 
    Distilled water - 4 μl
    Gel Loading Dye, Purple (6X), no SDS - 1 μl
    DNA Ladder - 1 μl
    Total volume - 6 μl
  2. Mix gently
  3. Load onto the agarose gel
    Note: The components of the mixture should be scaled up or down, depending on the width of the agarose gel.

For long term storage, store at -20°C. If samples need to be diluted, use TE or other buffer of minimal ionic strength. DNA may denature if diluted in dH20.