![In-a-science-laboratory,-a-scientist-is-applying-a-reacting-solution-on-a-pipette-then-inserts-it-into-a-test-tube](https://videocdn.cdnpk.net/excite/content/video/premium/partners0277/thumbnails/BB_4a09c701-1cf8-4a3a-881b-79717b2610bd_small.jpg)
In a science laboratory, a scientist is applying a reacting solution on a pipette then inserts it into a test tube
1080p 00:30
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