These roots were gently rinsed, put into a KOH solution for one hour at 90-100 degrees celsius, subsequently rinsed with a 5% vinegar solution and put into a 5% ink solution at 90-100 degrees celsius for 15 minutes.
These roots were gently rinsed, put into a KOH solution for one hour at 90-100 degrees celsius, subsequently rinsed with a 5% vinegar solution and put into a 5% ink solution at 90-100 degrees celsius for 15 minutes.