Iowa Code Title V. Agriculture [Chs. 159-215A] § 196.8. Quality--storage

1. All eggs offered for sale to an establishment must be no lower than United States department of agriculture consumer grade “B”. From the time of candling and grading until they reach the consumer, all eggs designated for human consumption shall be held at a temperature not to exceed 45 degrees Fahrenheit or 7 degrees Celsius ambient temperature. The 45 degrees Fahrenheit or 7 degrees Celsius ambient temperature requirement applies to any place or room in which eggs are stored, except inside a vehicle during transportation where the ambient temperature may exceed 45 degrees Fahrenheit or 7 degrees Celsius, provided the transport vehicle is equipped with refrigeration units capable of delivering air at a temperature not greater than 45 degrees Fahrenheit or 7 degrees Celsius and capable of cooling the vehicle to a temperature not greater than 45 degrees Fahrenheit or 7 degrees Celsius. All shell eggs shall be kept from freezing.

2. Notwithstanding subsection 1, eggs gathered for sale at a poultry show from fowl exhibited at the show, which show has received financial assistance from the state in prior fiscal years, shall be exempt from the storage temperature and consumer grade quality requirements contained in subsection 1.