Timed trial
15 minSegments
4
First
3:00
Total
15:00
A 15-minute experiment timer with setup, trial, observation, and notes.
Timed trials and observation windows
Free Experiment Timer
Use an experiment timer for timed trials, observation windows, data collection, incubation blocks, repeats, and cleanup. Run a precise countdown for one experiment, or create an XTimer room when a class or team needs a shared experiment timer.
Built for this job
Timed trials can be repeated with consistent visible windows.
Observation and notes time can be protected instead of rushed.
XTimer rooms support shared experiment timers for classes, labs, and remote demonstrations.
Current agenda item
Setup
1/4
3:00
Next
Trial
Total time
15:00
Use this setup in XTimer
Need a controller link, viewer display, or shared room?
Keep this simple timer for quick work. Move into an XTimer room when one person controls the clock and another screen shows it to a speaker, team, class, or audience.
Presets that match real work
Start from a timer people already understand.
Each preset has a clear use case, duration, and workflow. That makes the page useful for search visitors immediately, and gives professional users a natural path into XTimer rooms when they need separate controller and viewer devices.
Three repeats
17 minSegments
5
First
5:00
Total
17:00
A repeated experiment timer with three 5-minute trials and short reset windows.
Incubation check
30 minTotal
30 min
A 30-minute countdown for longer observation or incubation checkpoints.
Professional setup
Use the simple timer first, then graduate to controlled timing.
Use the same timer structure for every repeat when comparing results.
Reserve notes or cleanup time after each observation window.
Keep the timer visible but separate from the data collection surface.
Use an XTimer room when multiple observers need the same experiment timer.
Frequently asked questions
What is an experiment timer?
An experiment timer structures timed trials, observation windows, data collection, repeats, incubation blocks, and cleanup.
Can this timer handle repeated trials?
Yes. Use the three repeats preset or edit the segments to match the number of trials in your experiment.
Can a class share the experiment timer?
Yes. Create an XTimer room when a teacher or lab lead wants every group to follow the same visible timer.