Once the water is collected the Go-Flo bottles are detached from the rosette and transfered into a sterile clean van with HEPA air filtration (you can see the grey bottles hanging up on the walls). The water is filtered from the Go-Flo bottle into an acid-cleaned Teflon bottle used for methylmercury analysis. Melissa is wearing a gown, gloves, head cover and special clean van shoes to prevent any metal contamination to the seawater.