The ink is part of the season 2 Astrophysics series.
Gravity Wave is the disturbance in the fabric of spacetime by accelerated masses.
Two bottles of ink in one package - one for daily use (65 ml) and one you can use in your trips or you can simply make a gift (15ml).
Made in South Korea.
Type: Bottled Ink
Season: 2 Astrophysics
Surface tension: 50.0 dyne/cm (20'C)
Water Resistant: No
Volume: 65ml + 15ml
Bottle Material: Glass