Assertion: pen's ink | /r/HasProperty | based
Facets:
value: oil
type: DEGREE
value: water
type: OTHER
Source sentences:
text: The ink used in ballpoint pens is oil based and was originally designed as a cleaner more reliable alternative to fountain pens.
text: A ballpoint pen dispenses an oil-based ink by rolling a small hard sphere, usually 0.5–1.2 mm and made of brass, steel, or tungsten carbide.
text: Roller ball pens or roll pens are pens which use ball point writing mechanisms with water-based liquid or gelled ink, as opposed to the oil-based viscous inks found in ballpoint pens.
text: The ink used in ballpoint pens is oil based and dries faster than other types of ink.
text: Rollerball pens are similar to ballpoint pens, but use water-based or gelled ink and require less pressure on the rollerball tip to write.
text: Ballpoint pens contain ink that is oil-based, and is the most viscous of all pen-ink types.