Bell in Vacuum, Glass, DC Subcategory_Lab Burner Accessories showing equal pressure transmission across

showing equal pressure transmission across different piston areas

and a 60mm scale

letting electrophoresis setups switch between short and long separation runs on a single supply

Fifty-turn 4A coil for the demountable transformer

Pack of 5 rubber pipette bulbs in 5mL capacity provides suction control for precise volumetric transfer and pipetting in laboratory applications

Bell in Vacuum, Glass, DC Subcategory_Lab Burner Accessories showing equal pressure transmission acrossBell in vacuum jar with a 4 6V electric bell suspended on rubber cord inside a 22 by 15cm glass chamber, illustrating that sound cannot travel without air.