PYREX® High Temperature Pouring Rings, for PYREX® Media-lab Bottle, GL 45, 10 Pack

For use with 1516, 1517, 1518, 1519 and 1520 series bottles, Ideal for applications involving high temperatures, Red coloured ethylene-tetrafluoroethylene pouring ring, Withstands hot air sterilisation up to 180 °C