Open Access
Table 1
Pricing of components (August 2025) used in the described device. Numbers referred to the Figure 1, for a better visualization. Noted that “Others” defined additional materials, such as plumber connectors, aluminium plate and Plexiglas used here.
| Number | Component | Supplier | Price (€) | Quantity | Total cost (€) |
|---|---|---|---|---|---|
| (1) | Regular back-pack | Link | 3,49 | 1 | 3,49 |
| Electrical case | Link | 217,6 | 1 | 217,6 | |
| A | 12 V diaphragm pump | Link | 28,99 | 1 | 28,99 |
| B | Battery 12 V | Link | 31,9 | 1 | 31,9 |
| C | ON/OFF button | Link | 5,495 | 1 | 5,495 |
| 2 | Telescopic pole | Link | 25,73 | 1 | 25,73 |
| D | Plumber tap 3/8 mm | Link | 5,995 | 3 | 17,985 |
| E | Flow indicator | Link | 11,15 | 3 | 33,45 |
| F | Smith Root filter holderTubing | Link | 16,93 | 3 | 50,79 |
| (PVC transparent 8 mm) | Link | 9,99 | 1 | 9,99 | |
| Others | 40 | ||||
| Charger | Link | 25,99 | 1 | 25,99 | |
| Total: | 491,41 | ||||
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