Specifications include, but are not limited to:All containers shall be carefully inspected by the supplier for proper product and container conditions. Sulfur Dioxide cylinders and 1-ton containers, valves, valve threads and valve packing shall be in good condition and shall operate normally with a wrench that is no longer than eight (8”) inches. If the condition of the container and valves does not conform to recommended practices in the Compressed Gas Association (CGA) pamphlet CGA P-1, Safe Handling of Compressed Gas in Containers or CGA G-3, Sulfur Dioxide, the supplier furnishing the sulfur dioxide shall be notified immediately and the supplier shall take actions as soon as possible to correct the problem. Sulfur dioxide in individual returnable compressed gas cylinders, portable 1-ton tanks or in bulk shipments shall be in containers acceptable to the U.S. Department of Transportation* for nonflammable compressed or liquefied gases. *Code of Federal Regulations, Title 49 CFR Parts 171 - 179, and/or any revisions thereto (Transportation). Packing Precautions - Packagers receiving sulfur dioxide from a manufacturer shall exercise great care in packaging operations so there is no addition of moisture or other contaminants that would increase the formation of sulfurous acid or the introduction of other deleterious materials that could clog or corrode valves or lines. Filling Density - Filling density shall not exceed 125 percent. The filling density is defined as the percent ratio of the weight of the sulfur dioxide in the container to the weight of water that the container will hold at 60o F (15.6o C).