9 CFR § 590.534 - Freezing facilities.
(a) Freezing rooms, either on or off the premises, shall be capable of freezing all liquid egg products in accordance with the freezing requirements as set forth in § 590.536. Use of off-premise freezing facilities is permitted only when prior approval in writing from the National Supervisor is on file.
(b) Adequate air circulation shall be provided in all freezing rooms.
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