Immersion of a Glass Syringe
Question
How to immerse a glass syringe, as water can only exit when pressed, and in any case, it cannot enter due to pressure.
Answer
Immerse as usual.
Source
According to Halacha (Shulchan Aruch, Yoreh De'ah, Siman 252, Se'if 5; 9), hidden areas in vessels do not constitute a barrier. Here, it seems that it is also not defined as a hidden area.
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