Kosher Material Reference: Blanco Silgranit Kitchen Sinks

Purpose of This Reference

This page is provided as a supporting reference for clients who maintain kosher kitchens and wish to review material considerations related to kitchen sinks.

The enclosed document was issued by Rabbi Yisrael Rozen of the Zomet Institute and pertains specifically to kitchen sinks manufactured by BLANCO from Silgranit material.

Important: Iron & Water Co. does not interpret or apply religious law. We provide this material so clients may review it with their rabbinical authority as part of their own decision-making process.

Scope and Context

This reference applies only to Blanco kitchen sinks manufactured from Silgranit.

The document addresses material status and standard kashering guidance following non-kosher use or when transitioning between kitchen designations.

• Practices and requirements may vary based on individual rabbinical guidance.
• Clients are encouraged to consult their rabbi or mashgiach to confirm applicability to their specific kitchen and use case.

Source Document

The following letter was issued by Rabbi Yisrael Rozen, Dean of the Zomet Institute, and is provided unaltered and in full for reference purposes.

Questions or Further Review

If you would like assistance locating product specifications, material details, or manufacturer documentation to support a conversation with your rabbinical authority, our team is happy to help.

Important: Iron & Water Co. provides access to information. Final determination rests with the client and their chosen religious authority.