Fluid Sample Collection at Hydrothermal Vents with Keika’s Kynar Bags

We love hearing stories from our clients, and we’re excited to be able to share a recent one with you! Researchers at the University of South Carolina are sampling fluids from Atlantic ocean hydrothermal vents, and they’ve used Keika Ventures’ Kynar® bags to do it. The researchers designed and assembled a water sampler, and sent Keika the required dimensions for their prototype bag. We worked with our vendor to create the bag according to specifications, and the experiment was a success. 

The water sampler was attached to a Remotely Operated Vehicle, or ROV, and sent to the ocean floor to collect samples from several hydrothermal vents on the Mid-Atlantic Ridge. They collected sixty-seven samples of pristine hydrothermal fluids into our 2-L Kynar bags and six into 11-L bags. 

The UofSC team followed this up with another excursion to hydrothermal vents on the Mid-Cayman Rise spreading center, including the deepest known “black smoker” vents at 5,000 m. The team returned with seventy-nine 2-L Kynar bags and twenty-one 9L Kynar bags of hydrothermal fluids.

Keika's Kynar Sample Bags
Keika’s Kynar Sample Bags full of Atlantic seawater.
Hydrothermal vent sampling location in Atlantic Ocean.
From R/V Atlantis voyage AT42-01: Filename: sulis_20180916182458.jpg
Required Credit: Courtesy of Susan Lang, U. of South Carolina/NSF/ROV Jason/2018 ©Woods Hole Oceanographic Institution
“Black Smoker”
From R/V Atlantis voyage AT42-22: Filename: untitled.png
Required Credit: Courtesy of Jeff Seewald, WHOI/NSF, NASA/ROV Jason/2020 ©Woods Hole Oceanographic Institution
Kynar® bag filled with fluid sample. Success!
© Mitch Elend, U. Washington / Lost City 2018 Return / NSF / ROV Jason
Testing the sampler with cylinders and Keika’s Kynar® sampling bags.

The USC team is planning another excursion for more samples, and we are excited to hear the results! 
Keika Ventures is pleased to be able to offer Tedlar® and Kynar® bags in a range of sizes and specifications, including Poly 2-in-1, Jaco, and Roberts Valves. We offer some of our most popular standard sizing options, from 0.5L up to 25L, all the way up to 250L bags. If you have unique needs for your sampling methods, as the USC team did, we are happy to help coordinate with our suppliers and ensure that you get the custom bags that you need. Keika Ventures can provide bags made with alternative films for unusual projects, or specially located valve fittings and grommets.

PVDF (Tedlar® & Kynar®) Bag Sampling Solutions

KeikaVentures offers polyvinylidene fluoride (PVDF) bags in a wide variety of sizes and valve fittings. We can also custom make bags to fit any particular size or application needs and can customize the location of valve fittings and grommets.

Keika’s Tedlar & Kynar Solution Page

New Countries = New Map!

Over 100 countries spread across all 7 continents! Keika Ventures & Eduwhere have clients spread across the globe and we love sharing their country flags. We’ve been at this for over 19 years and the collection continues to grow. It’s been a while since we last updated our map (Russia!), so we’d like to welcome Oman, Belarus, Mozambique, Hungary, Bulgaria, and Malta.

We stopped counting at 100 countries. Honestly, I lose track when trying to count the flags… always feeling I’ve skipped one or double counted. I think we’re closing in on 120, but feel free to give it a try and let us know how many you count 🙂

Over 100 country flags spread over the world map.
Clients in over 100 countries spread across all 7 continents.

Environmental Equipment:
https://www.keikaventures.com

Analytical Services:
https://www.keikaventures.com/analytical.php

Online Compliance Training:
https://www.eduwhere.com

PVDF Sampling Bags in Antarctica

“A bag of ice to go, please.” We always enjoying hearing about the cool and unique situations our sampling bags (Kynar, Solef, and Tedlar) are used for. This specific case is especially cool. The Swedish icebreaker Oden was in Antarctica where our bags were used to study carbon dioxide in sea ice and snow.

Expedition team members from the icebreaker Oden use our Tedlar sampling bags to collect snow and ice samples in Antarctica.
Photo credit: Melissa Chierici & Agneta Fransson, University of Gothenburg, Sweden.

Keika Ventures offers polyvinylidene fluoride (PVDF) bags in a wide variety of sizes and valve fittings, as well as completely custom sizes, materials, and fittings.

All of our available bags, whether Tedlar® or Kynar®, are made from a PVDF film that is tough, durable, and chemically inert to a wide range of compounds. Bags used in environmental applications typically have a 2 mil or 3 mil film thickness and are applicable for a wide temperature range (98-225 °F).

The bags have heat sealed, leak-proof seams and can be used to collect both liquid and air samples. This versatility allows the bags to be used for a variety of applications. Applications include: stack sampling, vent/flue sampling, soil gas sampling, TCLP extractions, calibration gas blending and preparation of standards, indoor air sampling, and ground water testing. For most applications, either Tedlar® or Kynar® should be suitable.

Old Client Map!

We’ve always enjoyed seeing how the reach of Eduwhere & Keika Ventures. So much so that we started keeping track of our clients on a map, with hopes of eventually collecting clients in every country. Yes, it’s a stretch, but it’s a goal. I recently ran across an old version of our map from 2009… over a decade ago!. Can you count the flags? (Hint: It’s a lot).

Old 2009 Client Map. Over a decade old, but still lots of flags.