General Purpose Test Tube Racks Nalgene™, PC
Organize and store test tubes using general purpose test tube racks. These racks are available with handles for easy carrying. When empty, they can be stacked with any other racks of the same length. Holes are keyed with molded-in numbers and letters for easy identification of tubes. Higher specific gravity than water so it stays submerged in a water bath and won't float. Autoclavable (will reduce strength over time).