Format Seq-DI™ (v2) is a highly deionized formamide, conveniently offered in 25 mL and 250 mL bottles. Seq-DI™ Formamide is a proven, widely adopted and high quality sample loading reagent for ABI Genetic Analyzers. An economical alternative for Hi-Di™ (Hi-Di is a trademark of Applied Biosystems, LLC). Compatibility For 3730, 3130, 3100 and 310 Genetic Analyzers.