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This is the Chemical Oceanography Lab,

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and I'm going to show you guys around

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kind of the different samples

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that we take in the field

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and how we analyze them

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in the lab.

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This instrument

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is called the

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Elemental Analyzer.

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We use it to measure

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particulate organic carbon.

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So in the field,

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what we do is we'll filter seawater

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to get rid of the water

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and keep the stuff that's in it.

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And then the filter

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goes into this machine

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where it will be combusted.

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So it'll be burned up in a tube

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that is at

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950 degrees Celsius.
So quite hot.

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And then once it's busted up,

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all the gas that

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releases off of that

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gets pushed against

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another detector,

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and that will measure

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carbon and nitrogen.

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So this instrument is

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how we measure

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what's called CDOM.

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And it's how we kind of get a look

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at what color the water is

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if you take all this stuff out.

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So this is what typical

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seawater looks like.

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The higher wavelengths,

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you have a little dip here.

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That's kind of what

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salt looks like.

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And then up here in the lower

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wavelengths and your ultraviolet,

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you have a higher increase

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in signal.

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And that's where our CDOM is.

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So this is the last instrument

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that I work with

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on a regular basis.

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We use it to measure

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dissolved organic carbon.

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For this one.

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We keep the water

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that goes through the filter.

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So we don't want to know

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what's in the particles,

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what's in those cells,

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we want to know what those cells

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are releasing into the environment.

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So I'll show you guys

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how we keep our glassware

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clean.

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We have

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one,

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two and

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three different baths

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all of our dishes go through.

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They spend one day

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in each bath.

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It's a long process.

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To wash one dish is
four days of work.

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We need to get rid of all of

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what we have in this lab

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to make sure we're

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measuring accurately

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what's going on in the ocean.

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So what they don't tell you about science

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is you're gonna be doing a lot of dishes.

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The other thing to note

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is they spend one day in each bath,

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so they're not it's not a quick half hour

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a dunk.

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It's overnight

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in this bath, overnight in this bath,

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overnight in this bath

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and usually overnight in here

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because I'll start this

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at the end of the day.

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So

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Sometimes it feels like

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that's at home day.

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Yeah. Right.

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It feels like never doing anything for

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It's only 2%, but it's really viscous.

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Kind of.

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Imagine your dish soap at home.

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It's about that thick,

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this next one is also a bath.

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Soap bath.

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This is a bleach based

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solution called Rb's.

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So this is our second bath

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that it goes through.

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And then this is our third bath.

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The third bath is hydrochloric

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acid at 10%.

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Obviously bleach and acid

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do not go well together.

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Do not mix those.

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So we have to be really careful

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about rinsing between.

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And when we rinse,

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we rinse with milk water.

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So this is not standard tap water.

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This is water

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that's been purified through many filters

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and ultraviolet lights

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to give it an end goal of

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about three parts per billion of carbon.

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So we're looking at very,

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very low carbon.

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If it's glass

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it will then get

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put into this

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instrument is called a combustion oven.

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So it goes in here

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and then it gets heated to about 490°C

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for about four hours.

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So that burns off all the carbon

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that's also similar temperature

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to what our tech machine does.

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So really you're burning carbon it.

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And we want absolutely no carbon

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in our glassware

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because we're measuring really, really

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tiny amounts of carbon in the ocean.

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The open ocean has very little nutrients,

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very little carbon, very little nitrogen.

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So

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Yeah, lots of beds.

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Yes.

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That's, that's

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that's stood out last time.

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Yeah. Yeah, it's

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it's hard.

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We did just get a dishwasher.

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We need to get the detergent for it.

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And hopefully that automates it

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because this is all done by hand,

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so I can take me a couple hours a day.

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So we take measurements in the field.

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As long as the measurements

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look good and stable and as expected,

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then they get compared

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against what pieces.

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And as long as those match

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then we know that piece

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is working properly.

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And doing you know what

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we sent it up there to do.

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So

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we've had samples

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of a lot of what's called chickadees.

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Imean, chickadees meum is known

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as the sawdust of the sea.

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If you look out and it looks like there's

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a bunch of bodies in the water,

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that's tricot.

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They grow in

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these really cool,

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like, haystack formations,

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but called puffs.

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Or they'll grow in these really long,

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kind of like flatter bundles.

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We call those tufts. So