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Duran borosilicate glass, GL thread, lab bottles with graduations, retrace codes, red polybutylene terephthalate (PBT), PTFE lined caps. Red PBT pour rings to match caps or Blue Polypropylene caps and rings, or without caps and pour rings. Available in plain, safety coated, amber or netted pressure rated (14PSI) versions. See product family 7622 for replacement and alternative caps and pour rings. Red PBT caps have a 180°deg;C temp rating and Blue PP caps have a 140°deg;C rating. 10mL & 25mL DO NOT include pouring rings.