Flasks are RAY-SORB processed to protect materials sensitive to the light of shorter wavelengths for less than 1% transmission below 400 nm and approximately 5% transmission at 400-600 nm
PTFE standard taper stoppers provide excellent chemical resistance while the heavy, uniform walls offer superior strength and durability
Flat interior bottoms allow for stirring with standard stir bars and large, permanent, easy-to-read markings offer quick identification
These flasks are graduated to Class A volumetric tolerances for wide-mouth flasks while the wide mouths allow easy pipet access
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements and then RAY-SORB processed
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