1 kg activated carbon can hold approx. 100 ml solvent.
The internal solvent filter has a capacity of 1 kg activated carbon. Depending on the solvent used, it should be replaced every month.
The smaller external solvent filter has a capacity of 5 kg activated carbon. Depending on the solvent used, it should be replaced after 3-6 months.
The bigger external solvent filter has a capacity of 8 kg activated carbon. Depending on the solvent used, it should be replaced after 3-6 months.