Are utensils and appliances in Western countries considered pure despite being used for impure meats?

Question

A question regarding the purity of utensils and appliances used in the West for cooking non-pure meats, such as pork.

Answer 1

Peace be upon you.

Grand Ayatollah Sayyid Khamenei and Grand Ayatollah Sayyid Sistani (may Allah protect them):

If you are certain that the mentioned items are impure and then doubt whether they have become pure, you cannot declare them pure unless you are certain of their purity. Therefore, it is not permissible to use these utensils until you verify their purity.

However, if you do not have certainty that the utensils you have been given were previously impure, it is permissible to use them and eat from them.

May you be successful in all good.

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Source:

Grand Ayatollah Sayyid Khamenei (may Allah protect him): Answers to Questions, S312 + Fiqh of the Guardian: Rulings on Impurities (1)

Grand Ayatollah Sayyid Sistani (may Allah protect him): Selected Issues, Rulings on Purity » What establishes purity and impurity.