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building a hydrometer

Posted: Tue Jan 22, 2019 9:48 am
by Pinkvilla
We've tried to build a hydrometer with a straw and clay but the results to measure the salinity of water are not accurate. Any ideas as to how to build a hydrometer that would give us accurate results? Thank you!

Re: building a hydrometer

Posted: Wed Jan 23, 2019 4:38 pm
by norman40
Hi Pinkvilla,

A quick online search turned up a few ways to build a hydrometer. One example can be found here:

Once you've made a hydrometer, you have to calibrate it. Calibration instructions are included at the above link.

I hope this helps. Please ask again if you have more questions.

A. Norman