Conical Filtering Flask with Integral Plastic Side Arm, 1000mL, White Graduations, Borosilicate Glass Glass Flasks_Filtering Flasks sized to capture and measure

sized to capture and measure the 2:1 hydrogen-to-oxygen volume ratio during water electrolysis

Two selectable dot rates (25 or 45 per second) on a shock-absorbing plastic-case ticker timer

and internal organelles for protist biology teaching

this single large lump of genuine American coal ships in a cotton drawstring bag with a linked science-experiment activity

observation

Conical Filtering Flask with Integral Plastic Side Arm, 1000mL, White Graduations, Borosilicate Glass Glass Flasks_Filtering Flasks sized to capture and measureConical filtering flask in borosilicate 3. 3 glass holds 1000mL with integral plastic side arm for vacuum filtration and chemistry separation.