Filter papers. These are used to line a funnel to help remove solid particulates and chemical residues from solutions. Here the paper rounds have been folded in half,then in half again and one pocket thus formed opened up to make the conical shape | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4500 px × 4500 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |