Close-up of a Niskin bottle with black tape securing the stopper
By St. Petersburg Coastal and Marine Science Center
2012 (approx.)
![Close-up of a full Niskin bottle with black tape stretched across the stopper and secured](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/black-tape-cap.jpg?itok=hh7WbcAp)
Detailed Description
Black tape is stretched across the stopper of the Niskin bottle and secured to form a positive pressure seal.
Sources/Usage
Public Domain.