PYREX® Narrow Mouth Erlenmeyer Flasks are made of borosilicate glass and include impact-resistant, black phenolic screw caps. They are suitable for use as shaker flasks and for mixing, media prep, and storage. Graduations on the flasks show the approximate capacity and include a marking spot.
Uniform wall thickness offers balance between mechanical strength and thermal shock resistance
Screw cap features cemented-in, inert white rubber liners that withstand steam sterilization