Specifically designed for use in proteomics or genomics, where samples tend to very small, these tubes improve recovery by reducing sample-to-tube binding without the use of any additives or coatings, such as silicone. Enzymes remain active in the tubes, and are not denatured by any surface interactions. All tubes are certified DNase, RNase, and ATP-free and feature a Safe-Lock lid. Rated to 25,000g, the tubes have a high degree of transparency. Package of 250.