Product features The adapted LTS pipette tip is made of pure polypropylene and completely free of bioactive ingredients. It is produced in a 100008 level clean workshop and eliminates the possibility of external pollutants (DNA, DNase, RNase, ATP heat source, PCR inhibitor, protein or protease). High quality LTS tips are guaranteed to be completely inert and pollution-free, so they will not affect the experimental results in any way.