- IMG 20200205 134837
- IMG 20200204 192040
- IMG 20200205 133518
- IMG 20200205 134538
- SCOBY - alternatives Leder
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- Filtrations-Station
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- IMG 20200107 215051
- DIY 3D printed hand-powered paperfuge
- Mikroskopie-Bakterienfluss
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- visiting Kilobaser
- IMG 20200205 134945
- SCOBY waschen