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Culture Tube, 27 mL, Type I Borosilicate Glass, Screw Cap, 20mm x 150mm, 18-415, White Rubber Liner (Case of 144)
These standard round-bottom culture tubes are manufactured from 51 expansion borosilicate glass that conforms to ASTM Type I, Class B and USP Type I requirements. The tubes can be reused many times. The caps have a white 14B styrene-butadiene rubber liner or a PTFE faced 14B styrene-butadiene rubber liner. See the Cap and Closure Section for replacement caps.