INK ABSORBENCY OF BLOTTING PAPER

This method is used to determine the rate at which blotting papers absorb writing ink. It yields results that have been found useful in predicting and specifying the absorptive quality of blotting papers.

The method is based on the determination of the length of time required to absorb completely 1 mL of a standard writing ink at 23°C (73.4°F) but is by analogy suitable for most writing inks and watery solutions.