Chapter 37 – Immersion of Vessels
37.1) Purify glass and metal utensils bought from a heathen before use.
37.2) Do not immerse vessels when streams are swelled or thawing.
37.3) Do not immerse wooden vessels.
37.4) Put an old vessel that has been used by a non-Jew in boiling water or make it red hot before immersing.
37.5) You do not need to immerse vessels hired or borrowed from non-Jews.
37.6) Do not pronounce the benediction when immersing glassware manufactured by non-Jewish workmen.
37.7) Immerse vessels given to a non-Jew for repair without saying the benediction.
37.8) Vessels used to hold food ready to eat need not be immersed.
37.9) Immerse pepper grinders.
37.10) Thoroughly clean vessels before immersing.
37.11) Vessels with narrow openings must be kept in water until the water fills the vessel entirely.
37.12) Minors may not be entrusted with ritual immersion of vessels.
37.13) Do not immerse vessels on the Sabbath or on festival days.