Copper Specific Gravity Cylinder with Hook Category_Lab Equipment showing that air resistance —

showing that air resistance — not mass — accounts for differences in fall time under gravity

Square-section aluminum tube 1 meter long with side graduations and four sliding riders

a battery-free source of partial vacuum for bell-jar demonstrations without external power

Wall-mountable beech wood draining rack measures 20 x 20 inches and holds up to 90 pieces of labware inverted for post-wash drying in chemistry labs

this premium calorimeter delivers accurate specific-heat and heat-of-reaction measurements

Copper Specific Gravity Cylinder with Hook Category_Lab Equipment showing that air resistance —Copper 2 by 0. 5 inch specific gravity cylinder with a top hook for density and specific heat work, a distinctive density reference against the lighter aluminum and heavier steel cylinders.