Dampness
Rubber products should not be stored in damp storage rooms. Care should be taken to see that no condensation occurs. The relative humidity should desirably be below 65%.

Lighting
Rubber products should be shielded from light, especially from direct sunlight and strong artificial light with a high ultra-violet content. For this reason, the windows of storage rooms should be covered with a red or orange (never blue) coat of protective lacquer. All light sources that emit ultra-violet light, such as the commonly fitted fluorescent tubes, are especially damaging because of the formation of ozone associated with them. Room lighting with normal incandescent bulbs is preferable.

Oxygen and Ozone
Rubber products should be protected against air changes, especially against draughts, by wrapping, storing in airtight containers or by other means. This applies particularly to articles with a large surface to volume ratio, e.g. rubberised fabric or cellular articles. Since ozone is especially damaging, the storeroom must not contain any kind of equipment that generates ozone, e.g. fluorescent light sources.