Axygen® Filter Barrier tips are ideal for DNA amplification and microbiological applications where trace contamination can completely invalidate results. The filter prevents cross-contamination from sample to sample by creating a physical barrier in the tip to inhibit and block aerosols. All Axygen filter tips are RNase-/DNase-free and nonpyrogenic. They are packaged in sealed-bottom racks with lids to prevent contamination and are available in sterilized form. Axygen® Filter Barrier tips are ideal for DNA amplification and microbiological applications where trace contamination can completely invalidate results. The filter prevents cross-contamination from sample to sample by creating a physical barrier in the tip to inhibit and block aerosols. All Axygen filter tips are RNase-/DNase-free and nonpyrogenic. They are packaged in sealed-bottom racks with lids to prevent contamination and are available in sterilized form.