Dialysis Tubing, 32mm Width, 10 Feet Base Size_6 x 9" supplied for repeated use in

supplied for repeated use in osmosis and selective-transport demonstrations in biology and chemistry classes

Wider-apex 40° x 40° x 100° glass prism

this demo motor on a molded ABS base operates at 6-8V to demonstrate visible-spectrum color mixing

swim bladder

Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions

Dialysis Tubing, 32mm Width, 10 Feet Base Size_6 x 9" supplied for repeated use inUsed in osmosis and dialysis experiments, this roll of 12 14 kDa cutoff dialysis tubing lets students explore selective molecular transport across a semipermeable membrane.