Each licensee shall maintain a refrigerator of sufficient capacity to store all of those products in his possession which require refrigeration and the entire stock of such products shall be kept within the refrigerator at all times. The temperature of the refrigerator shall not be permitted to rise above 10 degrees C. or fall below 1 degree C., as indicated by a required standard mercury thermometer, except that storage below 1 degree C. is allowed if not specifically damaging to the product. Licensee shall not sell or distribute for resale or redistribution biologics which require refrigeration unless the purchaser or distributor for resale or redistribution is equipped to store said biologics in the manner above provided.