Tevilat Kelim

Tevilat Kelim, in Judaism, is the immersion of certain types of culinary utensils in a mikveh, on the occasion of their being acquired from a non-Jew.

Laws

The obligation to immerse metal utensils acquired from a non-Jew is Biblical based on the above verse, whereas the obligation to immerse glass utensils is Rabbinic. Halachic authorities dispute the status of plastic utensils: some say that they need not be immersed, and others say that they should be immersed without a blessing.