Niskin3D Water Sampler

The Niskin bottle, a seemingly simple tube designed to take water samples at discrete depths, is one of the most important tools of oceanography. Coupled with a CTD, an array of Niskin bottles provides everything and oceanographer needs to profile the ocean.

This version is designed around a 1.25 inch acrylic tube, the trigger mechanism can be expanded to fit any size pipe. The trigger is driven by a commercial waterproof servo (HiTec HS-646WP). Everything can be purchased off-the-shelf or printed on a home 3D printer.

Watch a video of the device in action: 3D printable mini-Niskin bottle

Read full build instructions at Oceanography for Everyone.

Support more projects like this by contributing to my Patreon: Tools for ocean science and conservation

5/20/2016: The original receiver file was bad. The file has now been updated.