US$ 10.41
bright-black
Vertically pivoting magnetic needle that visualizes the dip angle of Earth's field
Ovary model exposes cortex
8mm thickness produces reduced virtual images with a notably widened apparent field
B.O.D. Bottle with Glass Pennyhead Stopper, 300mL, Borosilicate Glass Lab Supplies_Clips bright-blackB. O. D. bottle in borosilicate glass holds 300mL with interchangeable glass pennyhead stopper for biological oxygen demand testing procedures.