Beehive shelf
![A beehive shelf is shown in the left-hand picture. The middle picture shows the shelf from the side with a gas entering from a tube on the left and bubbling up through a hole. The right-hand drawing is about half the scale of the others and shows the shelf in use inside a pneumatic trough.](/Images/godic/202412/23/Beehive-shelf0205.jpg")
A beehive shelf is a piece of laboratory equipment, usually of pottery, used to support a receiving jar or tube while a gas is being collected over water with a pneumatic trough.
Beehive shelf
英语百科
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