Please use the table below to select the Submarine agarose unit and casting kits that meet your needs: Product Gel size (w x l, cm) maximum # of samples/gel maximum separation distance (cm) at maximum sample loads HE 99X Max 15 x 20*** 60 8 HE 33 7 x 10 32 4 ***Additional Gel casting kits for 15 x 10 or 15 x 15 cm gels are available   Casting kits Gel size (w x l, cm) maximum # of samples/gel maximum separation distance (cm) at maximum sample loads Gel casting kit 15 x 10 cm 15 x 10 60 4 Gel casting kit 15 x 15 cm 15 x 15 60 6