PYREX 170 mL Screw Cap Culture Tubes with Phenolic Caps, 38x200 Case of 48

These 170 mL PYREX culture tubes are supplied with deep-form 38-430M GPI threaded phenolic caps to facilitate handling and sealing after autoclaving. Caps are fabricated from a special formula resistant to the effects of temperature and steam in autoclaving and are provided with a glued-in, white rubber liner. The white enamel marking spot gives an excellent surface for pencil notations. Pencil marks are easily erased. For replacement phenolic caps, see No. 9999.