Set a timer for 9 min. Start the online timer set for nine minutes. Visual fullscreen countdown timer. Sound alarm notification is optional. Just press start.
How to use 9 minutes timer
The timer will tell you when your nine minutes has run out. It will keep counting upward afterwards.
Sound notification (alarm) is optional. You can keep the timer running in the background if you for example open a new tab. If you have sound notification the timer will tell you when time is up (just make sure the sound is turned on).