ASTM Class B Borosilicate Glass Volumetric Flask with Glass Stopper, White Graduations Capacity:50mL demonstrating atmospheric pressure through evacuated

demonstrating atmospheric pressure through evacuated twin-hemisphere separation work

Economy wooden-ring conductivity apparatus with copper

13-inch diameter

the lightweight lab-safe body matching glass-block teaching geometry without the mass or fragility

0625 inches for showcasing Cub Scout pinewood derby cars and related models

ASTM Class B Borosilicate Glass Volumetric Flask with Glass Stopper, White Graduations Capacity:50mL demonstrating atmospheric pressure through evacuatedWhite printed graduations preserve meniscus contrast against dark titrants, with a ground glass stopper sealing an ASTM compliant Class B volumetric body.