The approximate age of iron gallotannate ink on document can be determined with the help of:
A. TLC
B. Colorimetric analysis of ink
C. Chloride ion diffusion of ink
D. Change in preservative
Answer:C
The approximate age of iron gallotannate ink on document can be determined with the help of:
A. TLC B. Colorimetric analysis of ink C. Chloride ion diffusion of ink D. Change in preservative