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Topic: Measuring surface tension  (Read 2048 times)

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Offline blueberry58

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Measuring surface tension
« on: November 28, 2014, 10:48:45 PM »
Surface tension of liquids can be measured with small glass tube one-third of a millimeter in diameter. I have used this device to measure urine ST. This year the provider dont sell it more.

Are there any glassware of this diameter and at least 6 inches ?

Someone knows some other practical and inexpensive method for measuring ST?

Offline Corribus

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Re: Measuring surface tension
« Reply #1 on: November 29, 2014, 12:35:08 AM »
I've used two methods, though whether they will be useful to you depends on your calibration point for "inexpensive".

http://en.wikipedia.org/wiki/Goniometer
http://en.wikipedia.org/wiki/Wilhelmy_plate

What men are poets who can speak of Jupiter if he were like a man, but if he is an immense spinning sphere of methane and ammonia must be silent?  - Richard P. Feynman

Offline Furanone

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"The true worth of an experimenter consists in pursuing not only what he seeks in his experiment, but also what he did not seek."

--Sir William Bragg (1862 - 1942)

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