Water resistance and light fastness test of some fountain pen, roller ball, ballpoint and gel inks

Ballpoint and gel

This test ran from 02-09-15. One strip was rinsed under running water. One strip was taped to the inside of a window facing out until 02-10-20 (5 weeks), one strip until 03-05-17 (8 months) and one strip was 1 m from a window perpendicular to it and subjected to office light until 03-08-18 (11 months). It can be noted that this gave almost the same effect as facing full sunlight one autumn week.

Ballpoint, rollerball, disposable fountain pens

This test ran from 02-09-22. One strip was rinsed under running water. One strip was taped to the inside of a window facing out until 02-10-31 (5 weeks), one strip until 03-05-17 (8 months).

Fountain pen inks

One strip was rinsed under running water, one was taped to the inside of a window between 03-01-07 and 03-05-17.

Rollerball, ballpoint, gel

One strip was rinsed under running water, one was taped to the inside of a window from 03-01-05 until 03-02-22 (6 weeks) and one until 03-05-17 (18 weeks).