For clean and accurate sampling, these DNA-free and RNase-free collection swabs have been tested by an independent lab to the most stringent standards. The DNA-controlled swabs are manufactured in a DNA controlled and monitored clean room environment. These sterile DNA-free cotton tipped applicator swab have a sturdy wooden handle ideal for blood specimen collection and buccal swabbing. Certified to be DNA-free, DNase-free, and RNase-free, the medical-grade, multi-purpose swab is a go-to for every crime scene investigator. 100 swabs, 6" length