Fastest Time to Produce a Test Tube of Oxygen in NoBook Lab

China

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Beihu-Chenzhou-Hunan, SAR, China / October 17, 2026

Yanhao Deng of Chenzhou, Hunan, filled a large test tube with pure oxygen in 1:25.09 in NoBook Lab, a virtual chemistry lab app, starting from an empty workbench. On a tablet, Yanhao drags in test tubes, an alcohol lamp, cotton wool, tubing and potassium permanganate, heats the reagent in a tilted tube and pipes the gas into a stoppered collecting tube until the air is pushed out and the readout lists oxygen alone, 1.767 millimoles of it. RecordSetter matched the phone video of the tablet and a smartwatch stopwatch with the tablet's own screen recording: the tube is unhooked from all tubing when the stopwatch stops at 01:25.09, and its readout still shows only oxygen several seconds later. Chemistry class at speedrun pace.

Tags: fastest, computer, laboratory, chemistry, test tube

Rules

Use the official NoBook Lab (NB Lab) virtual chemistry app
Start the stopwatch on an empty workbench; apparatus and reagents may only be added after it starts, and saved setups or ready-made templates may not be used
Oxygen may be produced by any reaction in the app, but an oxygen storage bag or any other ready-made oxygen source may not be used directly
Collect the oxygen in one large test tube, with the Amount of Substance display switched on so the tube's contents show on screen
Stop the stopwatch only when the large test tube is free of tubing, droppers and all other apparatus, closed by its rubber stopper alone
After the stopwatch stops, the tube's display must show oxygen as the only gas for at least 1 second
Time runs from the stopwatch start to its stop, read to the hundredth of a second on camera
Must be one continuous, unedited video showing the device screen and a running stopwatch from the empty workbench to the stop
Must provide video evidence
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