Dialysis Tubing, 1.77" x 100ft, 12,000-14,000 Dalton Weight_1000g Four-step large-ball-bearing differential pulley with

Four-step large-ball-bearing differential pulley with 20

Used as a precursor to other cobalt compounds and as a humidity indicator that turns blue when dry

the expanded introductory set adds protozoa

Triple-long plastic pulley set with three stacked wheels at 2

this student polarimeter brings optical-rotation measurement within reach of post-16 physics and chemistry labs

Dialysis Tubing, 1.77" x 100ft, 12,000-14,000 Dalton Weight_1000g Four-step large-ball-bearing differential pulley withWide format dialysis tubing on a 100 foot roll with a 12,000 to 14,000 dalton cutoff, demonstrating selective molecular transport during osmosis and diffusion investigations.