1.1 This test method covers the determination of the rate at which blotting papers absorb writing ink. Its applicability to other papers and liquids has not been determined. It yields results that have been found useful in predicting and specifying the absorptive quality of blotting papers.

1.2 The test 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).

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.>