Niskin3D water sampler

A printable Niskin bottle rig for water quality sampling.

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Description

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 fit into the rosette, a Voltron-esque amalgamation of everything an oceanographer needs to profile the ocean. Niskin bottles are neither cheap nor particularly easy to use. A commercial rosette requires a decent-sized winch to launch and recover, which means you need a vessel and a crew to deploy. For Rogue Ecologist and citizen scientists, getting a high-quality, discrete water sample is a perpetual challenge. With tools like the OpenROV and the soon-to-be-completed EcoDrone, I wanted a Niskin bottle that was light weight and capable of being mounted on both underwater robots and quadcopters with ease.

Until now.

After a few months of brainstorming and planning, I sat down this Friday and began building a 3D printable Niskin bottle that could be hand deployed or mounted on an OpenROV or drone. While 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 waterproof servo developed by the good folks over at OpenROV. Everything else can either be purchased off-the-shelf or printed on you home 3D printer. Later this month, I'll be taking my prototypes out on the RV Blue Heron for field testing in Lake Superior.

Read full build instructions at Southern Fried Science: http://www.southernfriedscience.com/?p=18730

Support more projects like this by contributing to my Patreon: https://www.patreon.com/Andrew_Thaler

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Comments

Mini 1Dubai Bunnies added this to the Print collection ago
3125dedda1e97218778baecec6a13e84?default=blank&size=40Alison Hapka added this to the Micro plastic research tools collection ago
021508b0052871604aad71ea54878061?default=blank&size=40jonny t printed this ago
Carousel thumb img 1818
Printed on:
XYZ Da Vinci 1.0 Pro
Result:
Great thanks, i modified it in the end to fit a Payload rail. I've acknowledged you within the design. http://www.thingiverse.com/thing:1455076
Feedback:
Great Design, Awesome
208b58a905f5b11dec0d1c8a4fbc94fb?default=blank&size=40David Williamson commented ago

I'm going to attempt to make one of these this weekend, although I haven't been able to get the underwater servo yet.

Mini db446816448dd0642f315c1f67a3f45c 400x400AndrewThaler published this design ago