Perkin Elmer Multiprobe small conductive non-sterile tips perkin elmer All tips are certified to be DNAse and RNAse free Filter and sterilized versions are available All disposable tips are made from 100% virgin polypropylene, unless otherwise noted PerkinElmer tips are manufactured to exacting specifications under strict quality guidelines SHIPPING: DHL Sea shipping for bulk orders 3 to 7 business days shipping