Order early for pre-holiday delivery. Flinn will be closed December 24th, 2025,
through January 4th, 2026, reopening Monday, January 5th, 2026.
Orders received after 10:30 AM Central Time on Tuesday, December 23rd, 2025,
will ship after we return.
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Bio-Rad's high-quality EZ Load™ molecular rulers are essential tools for every classroom molecular biologist. These DNA size standards can be used as positive controls for electrophoresis and for determining the sizes of unknown DNA fragments.
EZ Load molecular rulers cover all your DNA fragment–sizing needs, from oligonucleotides to PCR products to plasmids. The standards are prediluted to a concentration appropriate for most electrophoresis runs and are available in five size ranges. To ensure easy and correct measurement of your sample sizes, most of these ladders include a visually distinct reference band.
Bio-Rad Item No.: 1708355EDU