I'm glad to answer this question for you. The amount of ink used by college students to take notes every day varies from person to person, depending on the frequency, speed and handwriting size of students' notes every day. Generally speaking, students should not use too much ink to write notes every day. Because you use a student dragon pen, each bottle of 60ml ink can be used for a period of time, but if you often do your homework or write at a faster speed, it is recommended to bring half a bottle for standby to avoid running out of ink at critical moments. Of course, if you usually use a lot, you can also consider carrying a bottle of 60ml ink. I hope my answer is helpful to you.