| 摘要 |
<p>multi-compartment cylindrical cartridge is filled with different products for absorption of grease and colouring matter from solvents which are used in the degreasing industry. The cartridge comprises non-perforated top and bottom plates one of which forms a removable lid, perforated metal concentric tubes forming the different compartments and paper folded in concertina fashion for filtering. Only the filter paper id disposable. The different compartments can be emptied simultaneously or separately according to whether it is necessary to refill them all at once or individually. If e.g. the solvent becomes coloured, only the bleaching product need be removed and replaced without removing grease-absorbing prod.</p> |
