Random triples
| Subject | Object |
|---|---|
| gptkb:Berkey | Pesticides |
| gptkb:Berkey | Pharmaceuticals |
| gptkb:Berkey | Cysts |
| gptkb:Berkey | Soil |
| gptkb:Berkey | Heavy metals |
| gptkb:Berkey | Chlorine |
| gptkb:Berkey | Viruses |
| gptkb:Berkey | Fluoride (with optional filter) |
| gptkb:Berkey | gptkb:Bacteria |