Durable Polyester (B-490) markers are designed for use in laboratory identification applications such as vials, centrifuge, tubes, test tubes, straws and slides. B-490 labels can be applied to frozen surfaces including glass and polypropylene stored in liquid nitrogen when wrapped around itself by at least 1/8". White polyester material has a permanent acrylic adhesive and is thermal transfer printable. Good print smudge resistance, solvent resistance and high/low temperature performance of -320 to 212° F (-196 to 100° C). RoHS compliant to 2005/618/EC MCV amendment to RoHS Directive 2002/95/EC. A ribbon is required to print this material. Use Part Number IP-R4306 for the BradyPrinter i5100 or BRADY IP® Series Label Printer; use R4306 for a different printer.