Open Top Cylindrical Dropping Funnel with Glass Key Stopcock, 250mL, Ungraduated, Borosilicate Glass Chemical_Fine White Sand and lead threading onto string

and lead threading onto string or rod for mass-dependent pendulum period comparisons

the smaller and larger units letting students compare scale-dependent total internal reflection behavior

Class A volumetric flask in borosilicate glass holds 500mL with beaded rim for precision volumetric measurement and laboratory procedures

the polysaccharide used as the iodine-clock-reaction indicator and as a complex-sugar source in biology labs

Biodiesel production kit demonstrates green chemistry through transesterification reactions

Open Top Cylindrical Dropping Funnel with Glass Key Stopcock, 250mL, Ungraduated, Borosilicate Glass Chemical_Fine White Sand and lead threading onto stringOpen top cylindrical dropping funnel in borosilicate glass holds 250mL with glass key stopcock for controlled liquid addition procedures.