The lower weep hole exists to allow fluid to collect or drain out of the water pump to protect the bearing integrity. In a horizontal centrifugal pump there is little space between the bearing and the seal so fluid build-up could potentially threaten the bearing.
Definition of PETRI DISH. 1. : a small shallow dish of thin glass or plastic with a loose cover used especially for cultures in bacteriology.2. ADVERTISEMENT.Julius R. Petri â 1921 German bacteriologist.. : a small shallow dish of thin glass or plastic with a loose cover used especially for cultures in bacteriology. 2. ADVERTISEMENT. Julius R. Petri â 1921 German bacteriologist.
(ETO sterile non embryo toxic non pyrogenic). Supply of Petri dish by Mena Report. You can see a pic of Fred here, taken in the. when he was but a four-cell embryo, although we'll never know which one he was (my money's on the lower one.etri dish-a shallow dish used to culture bacteria. dish-a piece of dishware normally used as a container for holding or serving food; we gave them a set of dishes for a wedding present.