^aShipping limits are based on 250°F (121°C) maximum UF₆ temperature (203.3 LB UF₆/ft³), certified minimum internal volumes for all cylinders, which provides a 5% ullage for safety. The operating limits apply to UF₆ with a minimum purity of 99.5%. More restrictive measures are required if additional impurities are present. The maximum UF₆ temperature must not be exceeded.

^bMaximum enrichments indicated require moderation control equivalent to a UF₆ purity of 99.5%. Without moderation control, the maximum permissible enrichment is 1.0 wt % uranium-235

^cThis cylinder replaces model 30A cylinder.

^dModels 48X and 48Y replace Models 48A and 48F whose volumes have not been certified.

^eFor DOE gaseous diffusion plant depleted uranium with UF₆ purity in excess of 99.5%, the shipping limit is 28,000 LB for cylinders with 8,880 LB water capacity or greater.

^fEnrichment to 4.5 wt % is safe with moderation control equivalent to a UF₆ purity of 99.5%, but limited to 1.0 wt % uranium-235 for shipment.

^gEnrichment to 5.0 wt % is safe with moderation control equivalent to a UF₆ purity of 99.9%, but limited to 4.5 wt % for shipping.