macheck11
img1
In reference to:
www.apug.org/forum/index.php?threads/chokeberry-aronia-wi...
An attempt to undertake colorimetric testing for tannic content of various plant materials.
from left to right:
peels (5 medium size pomegranates infused giving 1000ml),
instant coffee 1 t.sp. in 50ml),
black tea 1 heap t.sp. in 250 ml),
effervescent aspirin 1 tablet (500mg of acetyl salicylic acid and 200 mg VitC).
Tested liquids were diluted 1:10 (giving 5.5ml) and 3 drops of water solution of FeCl3 (1g in 30ml) were added, to undertake a proper colorimetry I had no reference substance.
img1
In reference to:
www.apug.org/forum/index.php?threads/chokeberry-aronia-wi...
An attempt to undertake colorimetric testing for tannic content of various plant materials.
from left to right:
peels (5 medium size pomegranates infused giving 1000ml),
instant coffee 1 t.sp. in 50ml),
black tea 1 heap t.sp. in 250 ml),
effervescent aspirin 1 tablet (500mg of acetyl salicylic acid and 200 mg VitC).
Tested liquids were diluted 1:10 (giving 5.5ml) and 3 drops of water solution of FeCl3 (1g in 30ml) were added, to undertake a proper colorimetry I had no reference substance.