Buy from Amazon.com : http://fave.co/1CllTyb <br /><br />Pechiney Plastic Packaging PM992 - Parafilm M all-purpose laboratory film size: 2 X 250' -<br /><br />Product Description : <br />laboratory film parafilm size 2 X 250 <br />Quickly effectively seals labware <br />Waterproof moisture-proof film prevents sample evaporation contamination protects anhydrous materials <br />Can be folded repeatedly and twisted around sharp surface without rupturing <br />Increases approximately 200 when stretched lengthwise at 21C 70F
