§ 93.4. Atmospheric and temperature conditions.
(a) Oxygen content of the atmosphere shall be reduced to 5% or less in a controlled atmosphere storage room within 20 days after sealing the room and be maintained at or below such level for 90 days or more.
(b) The temperature, oxygen content and carbon dioxide content of the atmosphere shall be determined and recorded daily in a manner approved by the Department.
This section cited in 7 Pa. Code § 93.3 (relating to certification and sealing procedures) and 7 Pa. Code § 93.6 (relating to marking).
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