| 0 - | Not sensitive to contamination: These goods may be stored together with goods which cause contamination. |
| 1 - | Sensitive to contamination by dust: These goods must be stored separately from dusty goods; dust-sensitive goods should also be protected from dust during packing, e.g. by being covered with tarpaulins or the like. |
| 2 - | Sensitive to contamination by severe dust: These include packaged goods (e.g. in solid wooden cases) which do not suffer damage just by exposure to dust. |
| 3 - | Sensitive to contamination by dirt: These goods must be stored separately from goods which cause contamination by dirt; if this is impossible, they must be covered with mats, tarpaulins or the like. Dirt, which often occurs in a slimy, mushy, sticky or similar form, contaminates surfaces and may also mix with the goods in question. The goods may be rendered completely unusable. |
| 4 - | Sensitive to contamination by fats/oils: These goods must not be stored together with goods which cause staining by releasing fat or oil. The stains penetrate into the surface or upper layers of goods and cause sometimes irreversible stains. The goods may also be saturated by the fat/oil or self-heating may occur. |
| 5 - | Sensitive to contamination by dust, severe dust and dirt |
| 6 - | Sensitive to contamination by dust, severe dust and fats/oils |
| 7 - | Sensitive to contamination by dirt and fats/oils |
| 8 - | Sensitive to contamination by dust, severe dust, dirt and fats/oils |
| 9 - | Extremely sensitive to contamination, keep absolutely clean |