Description; General description; 1 RACK FRAME, 25 POSSIBLE TUBE SIZE COMBINATIONS This innovative, split-frame rack holds up to two different size tubes in the same rack and allows users to quickly switch grids to hold other sizes as needed. Each rack frame includes a set of grids in one size. Grid sets in alternate sizes can be purchased as needed.; Features and Benefits; More compact and less expensive than purchasing multiple racks Colored grid inserts correspond to a specific test tube size ranging from 10mm to 30mm in diameter Three tier rack holds tubes securely in place Rubber feet keep racks from sliding on benchtop, provide secure stacking while in storage Chemical resistant polyoxymethylene plastic rack frame and grids can be cleaned with mild detergent, ethanol or isopropyl alcohol; autoclaved at 121°C (250°F).; Legal Information; Bel-Art is a registered trademark of SP Scienceware, a division of SP; Switch-Grid is a registered trademark of SP Scienceware, a division of SP