ASTM Class B Borosilicate Glass Volumetric Flask with Glass Stopper, Blue Graduations Included_Chain Ten-piece set distributes matched evaporating

Ten-piece set distributes matched evaporating dishes across a full class or high-throughput lab where parallel evaporation at student stations is required

Student-sized electrophorus with a 15cm plastic charge plate and a metal disc on an insulated handle

the documented-purity strong base for pH adjustment

Reproduces Ewald von Kleist's 1745 charge-storage device with concentric metal cups around a plastic dielectric

ASTM Class B Borosilicate Glass Volumetric Flask with Glass Stopper, Blue Graduations Included_Chain Ten-piece set distributes matched evaporatingGround glass stopper pairs with an ASTM compliant Class B body for routine stock solution preparation in teaching labs and analytical exercises.