SpaceX Dragon delivers Wet Lab Kit to International Space Station

Posted by Thomas Anderson

The recently launched SpaceX Dragon spacecraft has successfully delivered a Wet Lab Kit to the crew aboard the International Space Station (ISS).

The Kit is loaded with supplies to make it easier for the ISS team to collect and process various types of scientific samples in orbit.

Launched on the second Commercial Resupply Mission March 1, this kit is part of the Wetlab 1 project. Wetlab 1 consists of the Wet Lab Kit, developed by NASA's Johnson Space Center in Houston, and a Plate Reader, assembled by NanoRacks of Houston. Both items are funded by the International Space Station National Laboratory Office.

"With the arrival of Wetlab 1 to station, we are accelerating support for the research community's sample processing needs," said Bert Magh, project manager of Wetlab 1 at Johnson.

"We think of it like a supply pantry for experiments. The Wet Lab Kit enhances the capabilities of the space station as a U.S. National Laboratory by providing frequently used supplies needed to complete the work there. Some investigators will benefit from being able to get analysis quicker rather than waiting for samples to return to Earth."

The kit can best be described as a 19.5-inch-by-16.75-inch-by-9.5-inch soft goods bag filled with flight-certified experiment tools and supplies. Contents include syringes, needles, absorbent pads, gloves, tape, labels, scissors, tubes, forceps, wipes, gauze, cable ties, bubble wrap and vials.

These supplies allow a broad range of samples - such as blood, urine, saliva, tissues, plants and specimens - to be processed in orbit. Subsequent launches will resupply items in the kit as needed.

The kit also contains a custom disposable glove bag, which is an unpressurized enclosure that keeps liquids and particles from escaping into the station's cabin. It is made of clear Teflon and boasts two integral inward-protruding gloves. The seams are heat-sealed, and the gloves are attached with Teflon-coated fiberglass cloth tape. The bag inflates to become 16 inches tall, 25 inches deep and 34 inches wide - and can then be attached to a collapsible frame. Small, half-inch Velcro coins are inside the glove bag to hold experiment materials in place.

"In the past, crew members had to process their samples in the Microgravity Science Glovebox (MSG), which is needed for experiments that require stricter containment controls," Magh explained.

"Now the crew won't have to interrupt MSG experiments. Instead, they can easily unfold the glove bag, perform their experiment and then deflate and trash it when completed."

Indeed, should a spill occur, cleaning wipes are used inside the bag to clean and absorb any liquids before deflating the bag by using the station's wet/dry vacuum through the bag's filter to prevent the release of any remaining particles or droplets.

Wetlab 2 is in the development stage and is targeted for launch in 2014. This project will provide hardware that will allow in-orbit gene expression analysis. The instrument will be capable of taking a sample grown in orbit, extracting the ribonucleic acid and setting up reactions that read and record real-time gene expression information. That information will be transmitted to Earth.

Also for use alongside the Web Lab Kit is the NanoRacks Plate Reader, which was launched to the station July 27, 2012, aboard the Japanese H-II Transfer Vehicle-3 resupply spacecraft. This instrument allows for in-orbit microbiological analysis, increasing life science and biological research on the station.

"Because of Wetlab 1, station users don't have to send their own supplies... The Wet Lab Kit is ready for them to use now. It is prepared with the tools and supplies they request for processing their experiment samples. [Plus], the Plate Reader makes it possible to instantly analyze samples and send the data to scientists on Earth," Magh added.