Niskin bottle
By Cooperative Research Units
2012 (approx.)
![black tape cap and clear bottle](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/niskin%20bottle%20public%20domain%20on%20usgs%20web.jpg?itok=ClEWouXt)
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.