Water Quality B/C

[Kazen]

fleshy algaue is fleshy macroalgae/seaweed, right?

[TwelveSquared]

Does anyone have advice on how to make the salinometer? How should I measure the salt and water mixtures?

Well... I've never done water quality myself, but i was enlisted to build a salinometer for the team that was. We're using an electronic device that measures salinity based off the resistance of that sample. Relatively easy build(two metal contacts a particular distance apart, wired to an ohmmeter), and more than enough accuracy.

[caseyotis]

Does anyone have advice on how to make the salinometer? How should I measure the salt and water mixtures?

Well... I've never done water quality myself, but i was enlisted to build a salinometer for the team that was. We're using an electronic device that measures salinity based off the resistance of that sample. Relatively easy build(two metal contacts a particular distance apart, wired to an ohmmeter), and more than enough accuracy.

Oh, now this is exciting. Would it be too much to ask for you to try to upload an image onto the Image Gallery? Or maybe tell how to make that? I've been looking for something that's not the straw/clay method.

[TwelveSquared]

Does anyone have advice on how to make the salinometer? How should I measure the salt and water mixtures?

Well... I've never done water quality myself, but i was enlisted to build a salinometer for the team that was. We're using an electronic device that measures salinity based off the resistance of that sample. Relatively easy build(two metal contacts a particular distance apart, wired to an ohmmeter), and more than enough accuracy.

Oh, now this is exciting. Would it be too much to ask for you to try to upload an image onto the Image Gallery? Or maybe tell how to make that? I've been looking for something that's not the straw/clay method.

We haven't actually built the device yet, but i will once we do.
The build is, as stated above, pretty simple- some sort of multimeter/ohmmeter/something-that-measures-electrical-resistance device, and a small apparatus that contains two metal leads of a particular size and distance apart(it doesn't matter, so long as the resistance will be within your device's measurable range)that are connected to the device. Then, you would just dip the leads into the sample, and plug the reading into a formula. We aren't the first people to try this, so you should be able to find plans or similar online. That's where we got the idea in the first place, actually.

[caseyotis]

We haven't actually built the device yet, but i will once we do.
The build is, as stated above, pretty simple- some sort of multimeter/ohmmeter/something-that-measures-electrical-resistance device, and a small apparatus that contains two metal leads of a particular size and distance apart(it doesn't matter, so long as the resistance will be within your device's measurable range)that are connected to the device. Then, you would just dip the leads into the sample, and plug the reading into a formula. We aren't the first people to try this, so you should be able to find plans or similar online. That's where we got the idea in the first place, actually.

Oh, okay.
Really? Odd. I looked up stuff like that online, and I couldn't find anything. I'm actually not that good at science, so that doesn't seem all that simple. But I'm sure I could make something like that with assistance.

[TwelveSquared]

We haven't actually built the device yet, but i will once we do.
The build is, as stated above, pretty simple- some sort of multimeter/ohmmeter/something-that-measures-electrical-resistance device, and a small apparatus that contains two metal leads of a particular size and distance apart(it doesn't matter, so long as the resistance will be within your device's measurable range)that are connected to the device. Then, you would just dip the leads into the sample, and plug the reading into a formula. We aren't the first people to try this, so you should be able to find plans or similar online. That's where we got the idea in the first place, actually.

Oh, okay.
Really? Odd. I looked up stuff like that online, and I couldn't find anything. I'm actually not that good at science, so that doesn't seem all that simple. But I'm sure I could make something like that with assistance.

This should be a good place to start-http://mathinscience.info/public/home_m ... tmeter.doc. start with that, but find a way to fix the two leads a certain distance apart, then test a bunch of samples with different salinity. that should allow you to determine the correlation between your reading and the salinity, and you've got a salinometer.

[caseyotis]

We haven't actually built the device yet, but i will once we do.
The build is, as stated above, pretty simple- some sort of multimeter/ohmmeter/something-that-measures-electrical-resistance device, and a small apparatus that contains two metal leads of a particular size and distance apart(it doesn't matter, so long as the resistance will be within your device's measurable range)that are connected to the device. Then, you would just dip the leads into the sample, and plug the reading into a formula. We aren't the first people to try this, so you should be able to find plans or similar online. That's where we got the idea in the first place, actually.

Oh, okay.
Really? Odd. I looked up stuff like that online, and I couldn't find anything. I'm actually not that good at science, so that doesn't seem all that simple. But I'm sure I could make something like that with assistance.

This should be a good place to start-http://mathinscience.info/public/home_m ... tmeter.doc. start with that, but find a way to fix the two leads a certain distance apart, then test a bunch of samples with different salinity. that should allow you to determine the correlation between your reading and the salinity, and you've got a salinometer.

Oh! Thank you so much~

[mnstrviola]

Does anyone have advice on how to make the salinometer? How should I measure the salt and water mixtures?

To answer both your questions, check this link out!
http://soinc.org/sites/default/files/up ... er12_0.pdf

^ I definitely recommend using the above design, as it's a lot easier to build and calibrate. Go for using a thing straw, as that will help make measurements more precise.

[Godlike]

What does the Fleshy Algae look like? Google Images doesn't pull up any useful images...

[Kazen]

What does the Fleshy Algae look like? Google Images doesn't pull up any useful images...

I think it's seaweed, but I'm not sure.



Do we only have to identify organisms on the list given in the rules or do we also have to know others? Since in the rules they put IDing and regarding the table into two separate sentences.