煮沸 しゃふつ消毒 しょうどくじゃなかったです
shafutsushōdokujanakattadesu

Noun
Desu Copula

The polite, past negative form of 煮沸消毒

1. Wasn't sterilized (by boiling); Didn't boil to sterilize.

Past/Perfective
Negative
Polite
Casual Register