| 1/00 | Boiling; Boiling apparatus for physical or chemical purposes (preparation of starch C08B 30/00; sugar industry C13; steam generation F22; domestic boilers F24) |
| 1/02 | Boiling; Boiling apparatus for physical or chemical purposes (preparation of starch C08B 30/00; sugar industry C13; steam generation F22; domestic boilers F24) Preventing foaming (in general B01D 19/02) |
| 1/04 | Boiling; Boiling apparatus for physical or chemical purposes (preparation of starch C08B 30/00; sugar industry C13; steam generation F22; domestic boilers F24) Preventing foaming (in general B01D 19/02) by chemical means |
| 1/06 | Boiling; Boiling apparatus for physical or chemical purposes (preparation of starch C08B 30/00; sugar industry C13; steam generation F22; domestic boilers F24) Preventing bumping |
| 1/08 | Boiling; Boiling apparatus for physical or chemical purposes (preparation of starch C08B 30/00; sugar industry C13; steam generation F22; domestic boilers F24) Boiling apparatus provided with reflux condenser |