1) The upper row shows the concentration of persimmon juice.
2) The middle row is from the left.
- Only red iron oxide.
- Apply red iron oxide on persimmon juice.
- Paint the persimmon juice over the bengara.
3) The lower row painted red iron oxide, soaked in indigo dye and blurred.
When rubbing with cloth, red color adheres to any sample.
Red iron oxide are not completely fixed.
(Red iron oxide to be the one that was beaten in the soy milk)